1/* SPARC-specific support for 64-bit ELF 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 3 2003, 2004 Free Software Foundation, Inc. 4 5 This file is part of BFD, the Binary File Descriptor library. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 20 21#include "bfd.h" 22#include "sysdep.h" 23#include "libbfd.h" 24#include "elf-bfd.h" 25#include "opcode/sparc.h" 26 27/* This is defined if one wants to build upward compatible binaries 28 with the original sparc64-elf toolchain. The support is kept in for 29 now but is turned off by default. dje 970930 */ 30/*#define SPARC64_OLD_RELOCS*/ 31 32#include "elf/sparc.h" 33 34/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ 35#define MINUS_ONE (~ (bfd_vma) 0) 36 37static struct bfd_link_hash_table * sparc64_elf_bfd_link_hash_table_create 38 PARAMS ((bfd *)); 39static bfd_reloc_status_type init_insn_reloc 40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, 41 bfd *, bfd_vma *, bfd_vma *)); 42static reloc_howto_type *sparc64_elf_reloc_type_lookup 43 PARAMS ((bfd *, bfd_reloc_code_real_type)); 44static void sparc64_elf_info_to_howto 45 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); 46 47static void sparc64_elf_build_plt 48 PARAMS ((bfd *, unsigned char *, int)); 49static bfd_vma sparc64_elf_plt_entry_offset 50 PARAMS ((bfd_vma)); 51static bfd_vma sparc64_elf_plt_ptr_offset 52 PARAMS ((bfd_vma, bfd_vma)); 53 54static bfd_boolean sparc64_elf_check_relocs 55 PARAMS ((bfd *, struct bfd_link_info *, asection *sec, 56 const Elf_Internal_Rela *)); 57static bfd_boolean sparc64_elf_adjust_dynamic_symbol 58 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); 59static bfd_boolean sparc64_elf_size_dynamic_sections 60 PARAMS ((bfd *, struct bfd_link_info *)); 61static int sparc64_elf_get_symbol_type 62 PARAMS (( Elf_Internal_Sym *, int)); 63static bfd_boolean sparc64_elf_add_symbol_hook 64 PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Sym *, 65 const char **, flagword *, asection **, bfd_vma *)); 66static bfd_boolean sparc64_elf_output_arch_syms 67 PARAMS ((bfd *, struct bfd_link_info *, PTR, 68 bfd_boolean (*) (PTR, const char *, Elf_Internal_Sym *, 69 asection *, struct elf_link_hash_entry *))); 70static void sparc64_elf_symbol_processing 71 PARAMS ((bfd *, asymbol *)); 72 73static bfd_boolean sparc64_elf_merge_private_bfd_data 74 PARAMS ((bfd *, bfd *)); 75 76static bfd_boolean sparc64_elf_fake_sections 77 PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); 78 79static const char *sparc64_elf_print_symbol_all 80 PARAMS ((bfd *, PTR, asymbol *)); 81static bfd_boolean sparc64_elf_new_section_hook 82 PARAMS ((bfd *, asection *)); 83static bfd_boolean sparc64_elf_relax_section 84 PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); 85static bfd_boolean sparc64_elf_relocate_section 86 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, 87 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); 88static bfd_boolean sparc64_elf_finish_dynamic_symbol 89 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, 90 Elf_Internal_Sym *)); 91static bfd_boolean sparc64_elf_finish_dynamic_sections 92 PARAMS ((bfd *, struct bfd_link_info *)); 93static bfd_boolean sparc64_elf_object_p PARAMS ((bfd *)); 94static long sparc64_elf_get_reloc_upper_bound PARAMS ((bfd *, asection *)); 95static long sparc64_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); 96static bfd_boolean sparc64_elf_slurp_one_reloc_table 97 PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, bfd_boolean)); 98static bfd_boolean sparc64_elf_slurp_reloc_table 99 PARAMS ((bfd *, asection *, asymbol **, bfd_boolean)); 100static long sparc64_elf_canonicalize_reloc 101 PARAMS ((bfd *, asection *, arelent **, asymbol **)); 102static long sparc64_elf_canonicalize_dynamic_reloc 103 PARAMS ((bfd *, arelent **, asymbol **)); 104static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR)); 105static enum elf_reloc_type_class sparc64_elf_reloc_type_class 106 PARAMS ((const Elf_Internal_Rela *)); 107 108/* The relocation "howto" table. */ 109 110static bfd_reloc_status_type sparc_elf_notsup_reloc 111 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 112static bfd_reloc_status_type sparc_elf_wdisp16_reloc 113 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 114static bfd_reloc_status_type sparc_elf_hix22_reloc 115 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 116static bfd_reloc_status_type sparc_elf_lox10_reloc 117 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); 118 119static reloc_howto_type sparc64_elf_howto_table[] = 120{ 121 HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE), 122 HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE), 123 HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE), 124 HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE), 125 HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE), 126 HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE), 127 HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE), 128 HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE), 129 HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE), 130 HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE), 131 HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE), 132 HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE), 133 HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE), 134 HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE), 135 HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE), 136 HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE), 137 HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE), 138 HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE), 139 HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE), 140 HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE), 141 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE), 142 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE), 143 HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE), 144 HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE), 145#ifndef SPARC64_OLD_RELOCS 146 HOWTO(R_SPARC_PLT32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE), 147 /* These aren't implemented yet. */ 148 HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE), 149 HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE), 150 HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE), 151 HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE), 152 HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE), 153#endif 154 HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE), 155 HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE), 156 HOWTO(R_SPARC_64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", FALSE,0,MINUS_ONE, TRUE), 157 HOWTO(R_SPARC_OLO10, 0,2,13,FALSE,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", FALSE,0,0x00001fff,TRUE), 158 HOWTO(R_SPARC_HH22, 42,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", FALSE,0,0x003fffff,TRUE), 159 HOWTO(R_SPARC_HM10, 32,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", FALSE,0,0x000003ff,TRUE), 160 HOWTO(R_SPARC_LM22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", FALSE,0,0x003fffff,TRUE), 161 HOWTO(R_SPARC_PC_HH22, 42,2,22,TRUE, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", FALSE,0,0x003fffff,TRUE), 162 HOWTO(R_SPARC_PC_HM10, 32,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", FALSE,0,0x000003ff,TRUE), 163 HOWTO(R_SPARC_PC_LM22, 10,2,22,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", FALSE,0,0x003fffff,TRUE), 164 HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE), 165 HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE), 166 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE), 167 HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE), 168 HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE), 169 HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE), 170 HOWTO(R_SPARC_DISP64, 0,4,64,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", FALSE,0,MINUS_ONE, TRUE), 171 HOWTO(R_SPARC_PLT64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", FALSE,0,MINUS_ONE, TRUE), 172 HOWTO(R_SPARC_HIX22, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", FALSE,0,MINUS_ONE, FALSE), 173 HOWTO(R_SPARC_LOX10, 0,4, 0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", FALSE,0,MINUS_ONE, FALSE), 174 HOWTO(R_SPARC_H44, 22,2,22,FALSE,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", FALSE,0,0x003fffff,FALSE), 175 HOWTO(R_SPARC_M44, 12,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", FALSE,0,0x000003ff,FALSE), 176 HOWTO(R_SPARC_L44, 0,2,13,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", FALSE,0,0x00000fff,FALSE), 177 HOWTO(R_SPARC_REGISTER, 0,4, 0,FALSE,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",FALSE,0,MINUS_ONE, FALSE), 178 HOWTO(R_SPARC_UA64, 0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", FALSE,0,MINUS_ONE, TRUE), 179 HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE), 180 HOWTO(R_SPARC_TLS_GD_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",FALSE,0,0x003fffff,TRUE), 181 HOWTO(R_SPARC_TLS_GD_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",FALSE,0,0x000003ff,TRUE), 182 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",FALSE,0,0x00000000,TRUE), 183 HOWTO(R_SPARC_TLS_GD_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",FALSE,0,0x3fffffff,TRUE), 184 HOWTO(R_SPARC_TLS_LDM_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",FALSE,0,0x003fffff,TRUE), 185 HOWTO(R_SPARC_TLS_LDM_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",FALSE,0,0x000003ff,TRUE), 186 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",FALSE,0,0x00000000,TRUE), 187 HOWTO(R_SPARC_TLS_LDM_CALL,2,2,30,TRUE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",FALSE,0,0x3fffffff,TRUE), 188 HOWTO(R_SPARC_TLS_LDO_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",FALSE,0,0x003fffff, FALSE), 189 HOWTO(R_SPARC_TLS_LDO_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",FALSE,0,0x000003ff, FALSE), 190 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",FALSE,0,0x00000000,TRUE), 191 HOWTO(R_SPARC_TLS_IE_HI22,10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",FALSE,0,0x003fffff,TRUE), 192 HOWTO(R_SPARC_TLS_IE_LO10,0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",FALSE,0,0x000003ff,TRUE), 193 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",FALSE,0,0x00000000,TRUE), 194 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",FALSE,0,0x00000000,TRUE), 195 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",FALSE,0,0x00000000,TRUE), 196 HOWTO(R_SPARC_TLS_LE_HIX22,0,2,0,FALSE,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",FALSE,0,0x003fffff, FALSE), 197 HOWTO(R_SPARC_TLS_LE_LOX10,0,2,0,FALSE,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",FALSE,0,0x000003ff, FALSE), 198 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",FALSE,0,0x00000000,TRUE), 199 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",FALSE,0,0x00000000,TRUE), 200 HOWTO(R_SPARC_TLS_DTPOFF32,0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",FALSE,0,0xffffffff,TRUE), 201 HOWTO(R_SPARC_TLS_DTPOFF64,0,4,64,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",FALSE,0,MINUS_ONE,TRUE), 202 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",FALSE,0,0x00000000,TRUE), 203 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",FALSE,0,0x00000000,TRUE) 204}; 205 206struct elf_reloc_map { 207 bfd_reloc_code_real_type bfd_reloc_val; 208 unsigned char elf_reloc_val; 209}; 210 211static const struct elf_reloc_map sparc_reloc_map[] = 212{ 213 { BFD_RELOC_NONE, R_SPARC_NONE, }, 214 { BFD_RELOC_16, R_SPARC_16, }, 215 { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, 216 { BFD_RELOC_8, R_SPARC_8 }, 217 { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, 218 { BFD_RELOC_CTOR, R_SPARC_64 }, 219 { BFD_RELOC_32, R_SPARC_32 }, 220 { BFD_RELOC_32_PCREL, R_SPARC_DISP32 }, 221 { BFD_RELOC_HI22, R_SPARC_HI22 }, 222 { BFD_RELOC_LO10, R_SPARC_LO10, }, 223 { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, 224 { BFD_RELOC_64_PCREL, R_SPARC_DISP64 }, 225 { BFD_RELOC_SPARC22, R_SPARC_22 }, 226 { BFD_RELOC_SPARC13, R_SPARC_13 }, 227 { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, 228 { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 }, 229 { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 }, 230 { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 }, 231 { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 }, 232 { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 }, 233 { BFD_RELOC_SPARC_COPY, R_SPARC_COPY }, 234 { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT }, 235 { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT }, 236 { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE }, 237 { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 }, 238 { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 }, 239 { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, 240 { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 }, 241 { BFD_RELOC_SPARC_10, R_SPARC_10 }, 242 { BFD_RELOC_SPARC_11, R_SPARC_11 }, 243 { BFD_RELOC_SPARC_64, R_SPARC_64 }, 244 { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 }, 245 { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 }, 246 { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 }, 247 { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 }, 248 { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 }, 249 { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 }, 250 { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 }, 251 { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 }, 252 { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 }, 253 { BFD_RELOC_SPARC_7, R_SPARC_7 }, 254 { BFD_RELOC_SPARC_5, R_SPARC_5 }, 255 { BFD_RELOC_SPARC_6, R_SPARC_6 }, 256 { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 }, 257 { BFD_RELOC_SPARC_TLS_GD_HI22, R_SPARC_TLS_GD_HI22 }, 258 { BFD_RELOC_SPARC_TLS_GD_LO10, R_SPARC_TLS_GD_LO10 }, 259 { BFD_RELOC_SPARC_TLS_GD_ADD, R_SPARC_TLS_GD_ADD }, 260 { BFD_RELOC_SPARC_TLS_GD_CALL, R_SPARC_TLS_GD_CALL }, 261 { BFD_RELOC_SPARC_TLS_LDM_HI22, R_SPARC_TLS_LDM_HI22 }, 262 { BFD_RELOC_SPARC_TLS_LDM_LO10, R_SPARC_TLS_LDM_LO10 }, 263 { BFD_RELOC_SPARC_TLS_LDM_ADD, R_SPARC_TLS_LDM_ADD }, 264 { BFD_RELOC_SPARC_TLS_LDM_CALL, R_SPARC_TLS_LDM_CALL }, 265 { BFD_RELOC_SPARC_TLS_LDO_HIX22, R_SPARC_TLS_LDO_HIX22 }, 266 { BFD_RELOC_SPARC_TLS_LDO_LOX10, R_SPARC_TLS_LDO_LOX10 }, 267 { BFD_RELOC_SPARC_TLS_LDO_ADD, R_SPARC_TLS_LDO_ADD }, 268 { BFD_RELOC_SPARC_TLS_IE_HI22, R_SPARC_TLS_IE_HI22 }, 269 { BFD_RELOC_SPARC_TLS_IE_LO10, R_SPARC_TLS_IE_LO10 }, 270 { BFD_RELOC_SPARC_TLS_IE_LD, R_SPARC_TLS_IE_LD }, 271 { BFD_RELOC_SPARC_TLS_IE_LDX, R_SPARC_TLS_IE_LDX }, 272 { BFD_RELOC_SPARC_TLS_IE_ADD, R_SPARC_TLS_IE_ADD }, 273 { BFD_RELOC_SPARC_TLS_LE_HIX22, R_SPARC_TLS_LE_HIX22 }, 274 { BFD_RELOC_SPARC_TLS_LE_LOX10, R_SPARC_TLS_LE_LOX10 }, 275 { BFD_RELOC_SPARC_TLS_DTPMOD32, R_SPARC_TLS_DTPMOD32 }, 276 { BFD_RELOC_SPARC_TLS_DTPMOD64, R_SPARC_TLS_DTPMOD64 }, 277 { BFD_RELOC_SPARC_TLS_DTPOFF32, R_SPARC_TLS_DTPOFF32 }, 278 { BFD_RELOC_SPARC_TLS_DTPOFF64, R_SPARC_TLS_DTPOFF64 }, 279 { BFD_RELOC_SPARC_TLS_TPOFF32, R_SPARC_TLS_TPOFF32 }, 280 { BFD_RELOC_SPARC_TLS_TPOFF64, R_SPARC_TLS_TPOFF64 }, 281#ifndef SPARC64_OLD_RELOCS 282 { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, 283#endif 284 { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 }, 285 { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 }, 286 { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 }, 287 { BFD_RELOC_SPARC_H44, R_SPARC_H44 }, 288 { BFD_RELOC_SPARC_M44, R_SPARC_M44 }, 289 { BFD_RELOC_SPARC_L44, R_SPARC_L44 }, 290 { BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER } 291}; 292 293static reloc_howto_type * 294sparc64_elf_reloc_type_lookup (abfd, code) 295 bfd *abfd ATTRIBUTE_UNUSED; 296 bfd_reloc_code_real_type code; 297{ 298 unsigned int i; 299 for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++) 300 { 301 if (sparc_reloc_map[i].bfd_reloc_val == code) 302 return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val]; 303 } 304 return 0; 305} 306 307static void 308sparc64_elf_info_to_howto (abfd, cache_ptr, dst) 309 bfd *abfd ATTRIBUTE_UNUSED; 310 arelent *cache_ptr; 311 Elf_Internal_Rela *dst; 312{ 313 BFD_ASSERT (ELF64_R_TYPE_ID (dst->r_info) < (unsigned int) R_SPARC_max_std); 314 cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)]; 315} 316 317struct sparc64_elf_section_data 318{ 319 struct bfd_elf_section_data elf; 320 unsigned int do_relax, reloc_count; 321}; 322 323#define sec_do_relax(sec) \ 324 ((struct sparc64_elf_section_data *) elf_section_data (sec))->do_relax 325#define canon_reloc_count(sec) \ 326 ((struct sparc64_elf_section_data *) elf_section_data (sec))->reloc_count 327 328/* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA 329 section can represent up to two relocs, we must tell the user to allocate 330 more space. */ 331 332static long 333sparc64_elf_get_reloc_upper_bound (abfd, sec) 334 bfd *abfd ATTRIBUTE_UNUSED; 335 asection *sec; 336{ 337 return (sec->reloc_count * 2 + 1) * sizeof (arelent *); 338} 339 340static long 341sparc64_elf_get_dynamic_reloc_upper_bound (abfd) 342 bfd *abfd; 343{ 344 return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2; 345} 346 347/* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of 348 them. We cannot use generic elf routines for this, because R_SPARC_OLO10 349 has secondary addend in ELF64_R_TYPE_DATA. We handle it as two relocations 350 for the same location, R_SPARC_LO10 and R_SPARC_13. */ 351 352static bfd_boolean 353sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, dynamic) 354 bfd *abfd; 355 asection *asect; 356 Elf_Internal_Shdr *rel_hdr; 357 asymbol **symbols; 358 bfd_boolean dynamic; 359{ 360 PTR allocated = NULL; 361 bfd_byte *native_relocs; 362 arelent *relent; 363 unsigned int i; 364 int entsize; 365 bfd_size_type count; 366 arelent *relents; 367 368 allocated = (PTR) bfd_malloc (rel_hdr->sh_size); 369 if (allocated == NULL) 370 goto error_return; 371 372 if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 373 || bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size) 374 goto error_return; 375 376 native_relocs = (bfd_byte *) allocated; 377 378 relents = asect->relocation + canon_reloc_count (asect); 379 380 entsize = rel_hdr->sh_entsize; 381 BFD_ASSERT (entsize == sizeof (Elf64_External_Rela)); 382 383 count = rel_hdr->sh_size / entsize; 384 385 for (i = 0, relent = relents; i < count; 386 i++, relent++, native_relocs += entsize) 387 { 388 Elf_Internal_Rela rela; 389 390 bfd_elf64_swap_reloca_in (abfd, native_relocs, &rela); 391 392 /* The address of an ELF reloc is section relative for an object 393 file, and absolute for an executable file or shared library. 394 The address of a normal BFD reloc is always section relative, 395 and the address of a dynamic reloc is absolute.. */ 396 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) 397 relent->address = rela.r_offset; 398 else 399 relent->address = rela.r_offset - asect->vma; 400 401 if (ELF64_R_SYM (rela.r_info) == 0) 402 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 403 else 404 { 405 asymbol **ps, *s; 406 407 ps = symbols + ELF64_R_SYM (rela.r_info) - 1; 408 s = *ps; 409 410 /* Canonicalize ELF section symbols. FIXME: Why? */ 411 if ((s->flags & BSF_SECTION_SYM) == 0) 412 relent->sym_ptr_ptr = ps; 413 else 414 relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; 415 } 416 417 relent->addend = rela.r_addend; 418 419 BFD_ASSERT (ELF64_R_TYPE_ID (rela.r_info) < (unsigned int) R_SPARC_max_std); 420 if (ELF64_R_TYPE_ID (rela.r_info) == R_SPARC_OLO10) 421 { 422 relent->howto = &sparc64_elf_howto_table[R_SPARC_LO10]; 423 relent[1].address = relent->address; 424 relent++; 425 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; 426 relent->addend = ELF64_R_TYPE_DATA (rela.r_info); 427 relent->howto = &sparc64_elf_howto_table[R_SPARC_13]; 428 } 429 else 430 relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)]; 431 } 432 433 canon_reloc_count (asect) += relent - relents; 434 435 if (allocated != NULL) 436 free (allocated); 437 438 return TRUE; 439 440 error_return: 441 if (allocated != NULL) 442 free (allocated); 443 return FALSE; 444} 445 446/* Read in and swap the external relocs. */ 447 448static bfd_boolean 449sparc64_elf_slurp_reloc_table (abfd, asect, symbols, dynamic) 450 bfd *abfd; 451 asection *asect; 452 asymbol **symbols; 453 bfd_boolean dynamic; 454{ 455 struct bfd_elf_section_data * const d = elf_section_data (asect); 456 Elf_Internal_Shdr *rel_hdr; 457 Elf_Internal_Shdr *rel_hdr2; 458 bfd_size_type amt; 459 460 if (asect->relocation != NULL) 461 return TRUE; 462 463 if (! dynamic) 464 { 465 if ((asect->flags & SEC_RELOC) == 0 466 || asect->reloc_count == 0) 467 return TRUE; 468 469 rel_hdr = &d->rel_hdr; 470 rel_hdr2 = d->rel_hdr2; 471 472 BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset 473 || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); 474 } 475 else 476 { 477 /* Note that ASECT->RELOC_COUNT tends not to be accurate in this 478 case because relocations against this section may use the 479 dynamic symbol table, and in that case bfd_section_from_shdr 480 in elf.c does not update the RELOC_COUNT. */ 481 if (asect->size == 0) 482 return TRUE; 483 484 rel_hdr = &d->this_hdr; 485 asect->reloc_count = NUM_SHDR_ENTRIES (rel_hdr); 486 rel_hdr2 = NULL; 487 } 488 489 amt = asect->reloc_count; 490 amt *= 2 * sizeof (arelent); 491 asect->relocation = (arelent *) bfd_alloc (abfd, amt); 492 if (asect->relocation == NULL) 493 return FALSE; 494 495 /* The sparc64_elf_slurp_one_reloc_table routine increments 496 canon_reloc_count. */ 497 canon_reloc_count (asect) = 0; 498 499 if (!sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, 500 dynamic)) 501 return FALSE; 502 503 if (rel_hdr2 504 && !sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols, 505 dynamic)) 506 return FALSE; 507 508 return TRUE; 509} 510 511/* Canonicalize the relocs. */ 512 513static long 514sparc64_elf_canonicalize_reloc (abfd, section, relptr, symbols) 515 bfd *abfd; 516 sec_ptr section; 517 arelent **relptr; 518 asymbol **symbols; 519{ 520 arelent *tblptr; 521 unsigned int i; 522 const struct elf_backend_data *bed = get_elf_backend_data (abfd); 523 524 if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) 525 return -1; 526 527 tblptr = section->relocation; 528 for (i = 0; i < canon_reloc_count (section); i++) 529 *relptr++ = tblptr++; 530 531 *relptr = NULL; 532 533 return canon_reloc_count (section); 534} 535 536 537/* Canonicalize the dynamic relocation entries. Note that we return 538 the dynamic relocations as a single block, although they are 539 actually associated with particular sections; the interface, which 540 was designed for SunOS style shared libraries, expects that there 541 is only one set of dynamic relocs. Any section that was actually 542 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses 543 the dynamic symbol table, is considered to be a dynamic reloc 544 section. */ 545 546static long 547sparc64_elf_canonicalize_dynamic_reloc (abfd, storage, syms) 548 bfd *abfd; 549 arelent **storage; 550 asymbol **syms; 551{ 552 asection *s; 553 long ret; 554 555 if (elf_dynsymtab (abfd) == 0) 556 { 557 bfd_set_error (bfd_error_invalid_operation); 558 return -1; 559 } 560 561 ret = 0; 562 for (s = abfd->sections; s != NULL; s = s->next) 563 { 564 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) 565 && (elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) 566 { 567 arelent *p; 568 long count, i; 569 570 if (! sparc64_elf_slurp_reloc_table (abfd, s, syms, TRUE)) 571 return -1; 572 count = canon_reloc_count (s); 573 p = s->relocation; 574 for (i = 0; i < count; i++) 575 *storage++ = p++; 576 ret += count; 577 } 578 } 579 580 *storage = NULL; 581 582 return ret; 583} 584 585/* Write out the relocs. */ 586 587static void 588sparc64_elf_write_relocs (abfd, sec, data) 589 bfd *abfd; 590 asection *sec; 591 PTR data; 592{ 593 bfd_boolean *failedp = (bfd_boolean *) data; 594 Elf_Internal_Shdr *rela_hdr; 595 Elf64_External_Rela *outbound_relocas, *src_rela; 596 unsigned int idx, count; 597 asymbol *last_sym = 0; 598 int last_sym_idx = 0; 599 600 /* If we have already failed, don't do anything. */ 601 if (*failedp) 602 return; 603 604 if ((sec->flags & SEC_RELOC) == 0) 605 return; 606 607 /* The linker backend writes the relocs out itself, and sets the 608 reloc_count field to zero to inhibit writing them here. Also, 609 sometimes the SEC_RELOC flag gets set even when there aren't any 610 relocs. */ 611 if (sec->reloc_count == 0) 612 return; 613 614 /* We can combine two relocs that refer to the same address 615 into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the 616 latter is R_SPARC_13 with no associated symbol. */ 617 count = 0; 618 for (idx = 0; idx < sec->reloc_count; idx++) 619 { 620 bfd_vma addr; 621 622 ++count; 623 624 addr = sec->orelocation[idx]->address; 625 if (sec->orelocation[idx]->howto->type == R_SPARC_LO10 626 && idx < sec->reloc_count - 1) 627 { 628 arelent *r = sec->orelocation[idx + 1]; 629 630 if (r->howto->type == R_SPARC_13 631 && r->address == addr 632 && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) 633 && (*r->sym_ptr_ptr)->value == 0) 634 ++idx; 635 } 636 } 637 638 rela_hdr = &elf_section_data (sec)->rel_hdr; 639 640 rela_hdr->sh_size = rela_hdr->sh_entsize * count; 641 rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); 642 if (rela_hdr->contents == NULL) 643 { 644 *failedp = TRUE; 645 return; 646 } 647 648 /* Figure out whether the relocations are RELA or REL relocations. */ 649 if (rela_hdr->sh_type != SHT_RELA) 650 abort (); 651 652 /* orelocation has the data, reloc_count has the count... */ 653 outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents; 654 src_rela = outbound_relocas; 655 656 for (idx = 0; idx < sec->reloc_count; idx++) 657 { 658 Elf_Internal_Rela dst_rela; 659 arelent *ptr; 660 asymbol *sym; 661 int n; 662 663 ptr = sec->orelocation[idx]; 664 665 /* The address of an ELF reloc is section relative for an object 666 file, and absolute for an executable file or shared library. 667 The address of a BFD reloc is always section relative. */ 668 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) 669 dst_rela.r_offset = ptr->address; 670 else 671 dst_rela.r_offset = ptr->address + sec->vma; 672 673 sym = *ptr->sym_ptr_ptr; 674 if (sym == last_sym) 675 n = last_sym_idx; 676 else if (bfd_is_abs_section (sym->section) && sym->value == 0) 677 n = STN_UNDEF; 678 else 679 { 680 last_sym = sym; 681 n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); 682 if (n < 0) 683 { 684 *failedp = TRUE; 685 return; 686 } 687 last_sym_idx = n; 688 } 689 690 if ((*ptr->sym_ptr_ptr)->the_bfd != NULL 691 && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec 692 && ! _bfd_elf_validate_reloc (abfd, ptr)) 693 { 694 *failedp = TRUE; 695 return; 696 } 697 698 if (ptr->howto->type == R_SPARC_LO10 699 && idx < sec->reloc_count - 1) 700 { 701 arelent *r = sec->orelocation[idx + 1]; 702 703 if (r->howto->type == R_SPARC_13 704 && r->address == ptr->address 705 && bfd_is_abs_section ((*r->sym_ptr_ptr)->section) 706 && (*r->sym_ptr_ptr)->value == 0) 707 { 708 idx++; 709 dst_rela.r_info 710 = ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend, 711 R_SPARC_OLO10)); 712 } 713 else 714 dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10); 715 } 716 else 717 dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type); 718 719 dst_rela.r_addend = ptr->addend; 720 bfd_elf64_swap_reloca_out (abfd, &dst_rela, (bfd_byte *) src_rela); 721 ++src_rela; 722 } 723} 724 725/* Sparc64 ELF linker hash table. */ 726 727struct sparc64_elf_app_reg 728{ 729 unsigned char bind; 730 unsigned short shndx; 731 bfd *abfd; 732 char *name; 733}; 734 735struct sparc64_elf_link_hash_table 736{ 737 struct elf_link_hash_table root; 738 739 struct sparc64_elf_app_reg app_regs [4]; 740}; 741 742/* Get the Sparc64 ELF linker hash table from a link_info structure. */ 743 744#define sparc64_elf_hash_table(p) \ 745 ((struct sparc64_elf_link_hash_table *) ((p)->hash)) 746 747/* Create a Sparc64 ELF linker hash table. */ 748 749static struct bfd_link_hash_table * 750sparc64_elf_bfd_link_hash_table_create (abfd) 751 bfd *abfd; 752{ 753 struct sparc64_elf_link_hash_table *ret; 754 bfd_size_type amt = sizeof (struct sparc64_elf_link_hash_table); 755 756 ret = (struct sparc64_elf_link_hash_table *) bfd_zmalloc (amt); 757 if (ret == (struct sparc64_elf_link_hash_table *) NULL) 758 return NULL; 759 760 if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, 761 _bfd_elf_link_hash_newfunc)) 762 { 763 free (ret); 764 return NULL; 765 } 766 767 return &ret->root.root; 768} 769 770/* Utility for performing the standard initial work of an instruction 771 relocation. 772 *PRELOCATION will contain the relocated item. 773 *PINSN will contain the instruction from the input stream. 774 If the result is `bfd_reloc_other' the caller can continue with 775 performing the relocation. Otherwise it must stop and return the 776 value to its caller. */ 777 778static bfd_reloc_status_type 779init_insn_reloc (abfd, 780 reloc_entry, 781 symbol, 782 data, 783 input_section, 784 output_bfd, 785 prelocation, 786 pinsn) 787 bfd *abfd; 788 arelent *reloc_entry; 789 asymbol *symbol; 790 PTR data; 791 asection *input_section; 792 bfd *output_bfd; 793 bfd_vma *prelocation; 794 bfd_vma *pinsn; 795{ 796 bfd_vma relocation; 797 reloc_howto_type *howto = reloc_entry->howto; 798 799 if (output_bfd != (bfd *) NULL 800 && (symbol->flags & BSF_SECTION_SYM) == 0 801 && (! howto->partial_inplace 802 || reloc_entry->addend == 0)) 803 { 804 reloc_entry->address += input_section->output_offset; 805 return bfd_reloc_ok; 806 } 807 808 /* This works because partial_inplace is FALSE. */ 809 if (output_bfd != NULL) 810 return bfd_reloc_continue; 811 812 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) 813 return bfd_reloc_outofrange; 814 815 relocation = (symbol->value 816 + symbol->section->output_section->vma 817 + symbol->section->output_offset); 818 relocation += reloc_entry->addend; 819 if (howto->pc_relative) 820 { 821 relocation -= (input_section->output_section->vma 822 + input_section->output_offset); 823 relocation -= reloc_entry->address; 824 } 825 826 *prelocation = relocation; 827 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); 828 return bfd_reloc_other; 829} 830 831/* For unsupported relocs. */ 832 833static bfd_reloc_status_type 834sparc_elf_notsup_reloc (abfd, 835 reloc_entry, 836 symbol, 837 data, 838 input_section, 839 output_bfd, 840 error_message) 841 bfd *abfd ATTRIBUTE_UNUSED; 842 arelent *reloc_entry ATTRIBUTE_UNUSED; 843 asymbol *symbol ATTRIBUTE_UNUSED; 844 PTR data ATTRIBUTE_UNUSED; 845 asection *input_section ATTRIBUTE_UNUSED; 846 bfd *output_bfd ATTRIBUTE_UNUSED; 847 char **error_message ATTRIBUTE_UNUSED; 848{ 849 return bfd_reloc_notsupported; 850} 851 852/* Handle the WDISP16 reloc. */ 853 854static bfd_reloc_status_type 855sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section, 856 output_bfd, error_message) 857 bfd *abfd; 858 arelent *reloc_entry; 859 asymbol *symbol; 860 PTR data; 861 asection *input_section; 862 bfd *output_bfd; 863 char **error_message ATTRIBUTE_UNUSED; 864{ 865 bfd_vma relocation; 866 bfd_vma insn; 867 bfd_reloc_status_type status; 868 869 status = init_insn_reloc (abfd, reloc_entry, symbol, data, 870 input_section, output_bfd, &relocation, &insn); 871 if (status != bfd_reloc_other) 872 return status; 873 874 insn &= ~ (bfd_vma) 0x303fff; 875 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff); 876 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 877 878 if ((bfd_signed_vma) relocation < - 0x40000 879 || (bfd_signed_vma) relocation > 0x3ffff) 880 return bfd_reloc_overflow; 881 else 882 return bfd_reloc_ok; 883} 884 885/* Handle the HIX22 reloc. */ 886 887static bfd_reloc_status_type 888sparc_elf_hix22_reloc (abfd, 889 reloc_entry, 890 symbol, 891 data, 892 input_section, 893 output_bfd, 894 error_message) 895 bfd *abfd; 896 arelent *reloc_entry; 897 asymbol *symbol; 898 PTR data; 899 asection *input_section; 900 bfd *output_bfd; 901 char **error_message ATTRIBUTE_UNUSED; 902{ 903 bfd_vma relocation; 904 bfd_vma insn; 905 bfd_reloc_status_type status; 906 907 status = init_insn_reloc (abfd, reloc_entry, symbol, data, 908 input_section, output_bfd, &relocation, &insn); 909 if (status != bfd_reloc_other) 910 return status; 911 912 relocation ^= MINUS_ONE; 913 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); 914 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 915 916 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0) 917 return bfd_reloc_overflow; 918 else 919 return bfd_reloc_ok; 920} 921 922/* Handle the LOX10 reloc. */ 923 924static bfd_reloc_status_type 925sparc_elf_lox10_reloc (abfd, 926 reloc_entry, 927 symbol, 928 data, 929 input_section, 930 output_bfd, 931 error_message) 932 bfd *abfd; 933 arelent *reloc_entry; 934 asymbol *symbol; 935 PTR data; 936 asection *input_section; 937 bfd *output_bfd; 938 char **error_message ATTRIBUTE_UNUSED; 939{ 940 bfd_vma relocation; 941 bfd_vma insn; 942 bfd_reloc_status_type status; 943 944 status = init_insn_reloc (abfd, reloc_entry, symbol, data, 945 input_section, output_bfd, &relocation, &insn); 946 if (status != bfd_reloc_other) 947 return status; 948 949 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff); 950 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); 951 952 return bfd_reloc_ok; 953} 954 955/* PLT/GOT stuff */ 956 957/* Both the headers and the entries are icache aligned. */ 958#define PLT_ENTRY_SIZE 32 959#define PLT_HEADER_SIZE (4 * PLT_ENTRY_SIZE) 960#define LARGE_PLT_THRESHOLD 32768 961#define GOT_RESERVED_ENTRIES 1 962 963#define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1" 964 965/* Fill in the .plt section. */ 966 967static void 968sparc64_elf_build_plt (output_bfd, contents, nentries) 969 bfd *output_bfd; 970 unsigned char *contents; 971 int nentries; 972{ 973 const unsigned int nop = 0x01000000; 974 int i, j; 975 976 /* The first four entries are reserved, and are initially undefined. 977 We fill them with `illtrap 0' to force ld.so to do something. */ 978 979 for (i = 0; i < PLT_HEADER_SIZE/4; ++i) 980 bfd_put_32 (output_bfd, (bfd_vma) 0, contents+i*4); 981 982 /* The first 32768 entries are close enough to plt1 to get there via 983 a straight branch. */ 984 985 for (i = 4; i < LARGE_PLT_THRESHOLD && i < nentries; ++i) 986 { 987 unsigned char *entry = contents + i * PLT_ENTRY_SIZE; 988 unsigned int sethi, ba; 989 990 /* sethi (. - plt0), %g1 */ 991 sethi = 0x03000000 | (i * PLT_ENTRY_SIZE); 992 993 /* ba,a,pt %xcc, plt1 */ 994 ba = 0x30680000 | (((contents+PLT_ENTRY_SIZE) - (entry+4)) / 4 & 0x7ffff); 995 996 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry); 997 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4); 998 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8); 999 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12); 1000 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16); 1001 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20); 1002 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24); 1003 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28); 1004 } 1005 1006 /* Now the tricky bit. Entries 32768 and higher are grouped in blocks of 1007 160: 160 entries and 160 pointers. This is to separate code from data, 1008 which is much friendlier on the cache. */ 1009 1010 for (; i < nentries; i += 160) 1011 { 1012 int block = (i + 160 <= nentries ? 160 : nentries - i); 1013 for (j = 0; j < block; ++j) 1014 { 1015 unsigned char *entry, *ptr; 1016 unsigned int ldx; 1017 1018 entry = contents + i*PLT_ENTRY_SIZE + j*4*6; 1019 ptr = contents + i*PLT_ENTRY_SIZE + block*4*6 + j*8; 1020 1021 /* ldx [%o7 + ptr - (entry+4)], %g1 */ 1022 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff); 1023 1024 /* mov %o7,%g5 1025 call .+8 1026 nop 1027 ldx [%o7+P],%g1 1028 jmpl %o7+%g1,%g1 1029 mov %g5,%o7 */ 1030 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry); 1031 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4); 1032 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8); 1033 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12); 1034 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16); 1035 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20); 1036 1037 bfd_put_64 (output_bfd, (bfd_vma) (contents - (entry + 4)), ptr); 1038 } 1039 } 1040} 1041 1042/* Return the offset of a particular plt entry within the .plt section. */ 1043 1044static bfd_vma 1045sparc64_elf_plt_entry_offset (index) 1046 bfd_vma index; 1047{ 1048 bfd_vma block, ofs; 1049 1050 if (index < LARGE_PLT_THRESHOLD) 1051 return index * PLT_ENTRY_SIZE; 1052 1053 /* See above for details. */ 1054 1055 block = (index - LARGE_PLT_THRESHOLD) / 160; 1056 ofs = (index - LARGE_PLT_THRESHOLD) % 160; 1057 1058 return (LARGE_PLT_THRESHOLD + block * 160) * PLT_ENTRY_SIZE + ofs * 6 * 4; 1059} 1060 1061static bfd_vma 1062sparc64_elf_plt_ptr_offset (index, max) 1063 bfd_vma index; 1064 bfd_vma max; 1065{ 1066 bfd_vma block, ofs, last; 1067 1068 BFD_ASSERT(index >= LARGE_PLT_THRESHOLD); 1069 1070 /* See above for details. */ 1071 1072 block = (((index - LARGE_PLT_THRESHOLD) / 160) * 160) + LARGE_PLT_THRESHOLD; 1073 ofs = index - block; 1074 if (block + 160 > max) 1075 last = (max - LARGE_PLT_THRESHOLD) % 160; 1076 else 1077 last = 160; 1078 1079 return (block * PLT_ENTRY_SIZE 1080 + last * 6*4 1081 + ofs * 8); 1082} 1083 1084/* Look through the relocs for a section during the first phase, and 1085 allocate space in the global offset table or procedure linkage 1086 table. */ 1087 1088static bfd_boolean 1089sparc64_elf_check_relocs (abfd, info, sec, relocs) 1090 bfd *abfd; 1091 struct bfd_link_info *info; 1092 asection *sec; 1093 const Elf_Internal_Rela *relocs; 1094{ 1095 bfd *dynobj; 1096 Elf_Internal_Shdr *symtab_hdr; 1097 struct elf_link_hash_entry **sym_hashes; 1098 bfd_vma *local_got_offsets; 1099 const Elf_Internal_Rela *rel; 1100 const Elf_Internal_Rela *rel_end; 1101 asection *sgot; 1102 asection *srelgot; 1103 asection *sreloc; 1104 1105 if (info->relocatable || !(sec->flags & SEC_ALLOC)) 1106 return TRUE; 1107 1108 dynobj = elf_hash_table (info)->dynobj; 1109 symtab_hdr = &elf_tdata (abfd)->symtab_hdr; 1110 sym_hashes = elf_sym_hashes (abfd); 1111 local_got_offsets = elf_local_got_offsets (abfd); 1112 1113 sgot = NULL; 1114 srelgot = NULL; 1115 sreloc = NULL; 1116 1117 rel_end = relocs + NUM_SHDR_ENTRIES (& elf_section_data (sec)->rel_hdr); 1118 for (rel = relocs; rel < rel_end; rel++) 1119 { 1120 unsigned long r_symndx; 1121 struct elf_link_hash_entry *h; 1122 1123 r_symndx = ELF64_R_SYM (rel->r_info); 1124 if (r_symndx < symtab_hdr->sh_info) 1125 h = NULL; 1126 else 1127 h = sym_hashes[r_symndx - symtab_hdr->sh_info]; 1128 1129 switch (ELF64_R_TYPE_ID (rel->r_info)) 1130 { 1131 case R_SPARC_GOT10: 1132 case R_SPARC_GOT13: 1133 case R_SPARC_GOT22: 1134 /* This symbol requires a global offset table entry. */ 1135 1136 if (dynobj == NULL) 1137 { 1138 /* Create the .got section. */ 1139 elf_hash_table (info)->dynobj = dynobj = abfd; 1140 if (! _bfd_elf_create_got_section (dynobj, info)) 1141 return FALSE; 1142 } 1143 1144 if (sgot == NULL) 1145 { 1146 sgot = bfd_get_section_by_name (dynobj, ".got"); 1147 BFD_ASSERT (sgot != NULL); 1148 } 1149 1150 if (srelgot == NULL && (h != NULL || info->shared)) 1151 { 1152 srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); 1153 if (srelgot == NULL) 1154 { 1155 srelgot = bfd_make_section (dynobj, ".rela.got"); 1156 if (srelgot == NULL 1157 || ! bfd_set_section_flags (dynobj, srelgot, 1158 (SEC_ALLOC 1159 | SEC_LOAD 1160 | SEC_HAS_CONTENTS 1161 | SEC_IN_MEMORY 1162 | SEC_LINKER_CREATED 1163 | SEC_READONLY)) 1164 || ! bfd_set_section_alignment (dynobj, srelgot, 3)) 1165 return FALSE; 1166 } 1167 } 1168 1169 if (h != NULL) 1170 { 1171 if (h->got.offset != (bfd_vma) -1) 1172 { 1173 /* We have already allocated space in the .got. */ 1174 break; 1175 } 1176 h->got.offset = sgot->size; 1177 1178 /* Make sure this symbol is output as a dynamic symbol. */ 1179 if (h->dynindx == -1) 1180 { 1181 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1182 return FALSE; 1183 } 1184 1185 srelgot->size += sizeof (Elf64_External_Rela); 1186 } 1187 else 1188 { 1189 /* This is a global offset table entry for a local 1190 symbol. */ 1191 if (local_got_offsets == NULL) 1192 { 1193 bfd_size_type size; 1194 register unsigned int i; 1195 1196 size = symtab_hdr->sh_info; 1197 size *= sizeof (bfd_vma); 1198 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); 1199 if (local_got_offsets == NULL) 1200 return FALSE; 1201 elf_local_got_offsets (abfd) = local_got_offsets; 1202 for (i = 0; i < symtab_hdr->sh_info; i++) 1203 local_got_offsets[i] = (bfd_vma) -1; 1204 } 1205 if (local_got_offsets[r_symndx] != (bfd_vma) -1) 1206 { 1207 /* We have already allocated space in the .got. */ 1208 break; 1209 } 1210 local_got_offsets[r_symndx] = sgot->size; 1211 1212 if (info->shared) 1213 { 1214 /* If we are generating a shared object, we need to 1215 output a R_SPARC_RELATIVE reloc so that the 1216 dynamic linker can adjust this GOT entry. */ 1217 srelgot->size += sizeof (Elf64_External_Rela); 1218 } 1219 } 1220 1221 sgot->size += 8; 1222 1223#if 0 1224 /* Doesn't work for 64-bit -fPIC, since sethi/or builds 1225 unsigned numbers. If we permit ourselves to modify 1226 code so we get sethi/xor, this could work. 1227 Question: do we consider conditionally re-enabling 1228 this for -fpic, once we know about object code models? */ 1229 /* If the .got section is more than 0x1000 bytes, we add 1230 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13 1231 bit relocations have a greater chance of working. */ 1232 if (sgot->size >= 0x1000 1233 && elf_hash_table (info)->hgot->root.u.def.value == 0) 1234 elf_hash_table (info)->hgot->root.u.def.value = 0x1000; 1235#endif 1236 1237 break; 1238 1239 case R_SPARC_WPLT30: 1240 case R_SPARC_PLT32: 1241 case R_SPARC_HIPLT22: 1242 case R_SPARC_LOPLT10: 1243 case R_SPARC_PCPLT32: 1244 case R_SPARC_PCPLT22: 1245 case R_SPARC_PCPLT10: 1246 case R_SPARC_PLT64: 1247 /* This symbol requires a procedure linkage table entry. We 1248 actually build the entry in adjust_dynamic_symbol, 1249 because this might be a case of linking PIC code without 1250 linking in any dynamic objects, in which case we don't 1251 need to generate a procedure linkage table after all. */ 1252 1253 if (h == NULL) 1254 { 1255 /* It does not make sense to have a procedure linkage 1256 table entry for a local symbol. */ 1257 bfd_set_error (bfd_error_bad_value); 1258 return FALSE; 1259 } 1260 1261 /* Make sure this symbol is output as a dynamic symbol. */ 1262 if (h->dynindx == -1) 1263 { 1264 if (! bfd_elf_link_record_dynamic_symbol (info, h)) 1265 return FALSE; 1266 } 1267 1268 h->needs_plt = 1; 1269 if (ELF64_R_TYPE_ID (rel->r_info) != R_SPARC_PLT32 1270 && ELF64_R_TYPE_ID (rel->r_info) != R_SPARC_PLT64) 1271 break; 1272 /* Fall through. */ 1273 case R_SPARC_PC10: 1274 case R_SPARC_PC22: 1275 case R_SPARC_PC_HH22: 1276 case R_SPARC_PC_HM10: 1277 case R_SPARC_PC_LM22: 1278 if (h != NULL 1279 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) 1280 break; 1281 /* Fall through. */ 1282 case R_SPARC_DISP8: 1283 case R_SPARC_DISP16: 1284 case R_SPARC_DISP32: 1285 case R_SPARC_DISP64: 1286 case R_SPARC_WDISP30: 1287 case R_SPARC_WDISP22: 1288 case R_SPARC_WDISP19: 1289 case R_SPARC_WDISP16: 1290 if (h == NULL) 1291 break; 1292 /* Fall through. */ 1293 case R_SPARC_8: 1294 case R_SPARC_16: 1295 case R_SPARC_32: 1296 case R_SPARC_HI22: 1297 case R_SPARC_22: 1298 case R_SPARC_13: 1299 case R_SPARC_LO10: 1300 case R_SPARC_UA32: 1301 case R_SPARC_10: 1302 case R_SPARC_11: 1303 case R_SPARC_64: 1304 case R_SPARC_OLO10: 1305 case R_SPARC_HH22: 1306 case R_SPARC_HM10: 1307 case R_SPARC_LM22: 1308 case R_SPARC_7: 1309 case R_SPARC_5: 1310 case R_SPARC_6: 1311 case R_SPARC_HIX22: 1312 case R_SPARC_LOX10: 1313 case R_SPARC_H44: 1314 case R_SPARC_M44: 1315 case R_SPARC_L44: 1316 case R_SPARC_UA64: 1317 case R_SPARC_UA16: 1318 /* When creating a shared object, we must copy these relocs 1319 into the output file. We create a reloc section in 1320 dynobj and make room for the reloc. 1321 1322 But don't do this for debugging sections -- this shows up 1323 with DWARF2 -- first because they are not loaded, and 1324 second because DWARF sez the debug info is not to be 1325 biased by the load address. */ 1326 if (info->shared && (sec->flags & SEC_ALLOC)) 1327 { 1328 if (sreloc == NULL) 1329 { 1330 const char *name; 1331 1332 name = (bfd_elf_string_from_elf_section 1333 (abfd, 1334 elf_elfheader (abfd)->e_shstrndx, 1335 elf_section_data (sec)->rel_hdr.sh_name)); 1336 if (name == NULL) 1337 return FALSE; 1338 1339 BFD_ASSERT (strncmp (name, ".rela", 5) == 0 1340 && strcmp (bfd_get_section_name (abfd, sec), 1341 name + 5) == 0); 1342 1343 sreloc = bfd_get_section_by_name (dynobj, name); 1344 if (sreloc == NULL) 1345 { 1346 flagword flags; 1347 1348 sreloc = bfd_make_section (dynobj, name); 1349 flags = (SEC_HAS_CONTENTS | SEC_READONLY 1350 | SEC_IN_MEMORY | SEC_LINKER_CREATED); 1351 if ((sec->flags & SEC_ALLOC) != 0) 1352 flags |= SEC_ALLOC | SEC_LOAD; 1353 if (sreloc == NULL 1354 || ! bfd_set_section_flags (dynobj, sreloc, flags) 1355 || ! bfd_set_section_alignment (dynobj, sreloc, 3)) 1356 return FALSE; 1357 } 1358 if (sec->flags & SEC_READONLY) 1359 info->flags |= DF_TEXTREL; 1360 } 1361 1362 sreloc->size += sizeof (Elf64_External_Rela); 1363 } 1364 break; 1365 1366 case R_SPARC_REGISTER: 1367 /* Nothing to do. */ 1368 break; 1369 1370 default: 1371 (*_bfd_error_handler) (_("%B: check_relocs: unhandled reloc type %d"), 1372 abfd, ELF64_R_TYPE_ID (rel->r_info)); 1373 return FALSE; 1374 } 1375 } 1376 1377 return TRUE; 1378} 1379 1380/* Hook called by the linker routine which adds symbols from an object 1381 file. We use it for STT_REGISTER symbols. */ 1382 1383static bfd_boolean 1384sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) 1385 bfd *abfd; 1386 struct bfd_link_info *info; 1387 Elf_Internal_Sym *sym; 1388 const char **namep; 1389 flagword *flagsp ATTRIBUTE_UNUSED; 1390 asection **secp ATTRIBUTE_UNUSED; 1391 bfd_vma *valp ATTRIBUTE_UNUSED; 1392{ 1393 static const char *const stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" }; 1394 1395 if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER) 1396 { 1397 int reg; 1398 struct sparc64_elf_app_reg *p; 1399 1400 reg = (int)sym->st_value; 1401 switch (reg & ~1) 1402 { 1403 case 2: reg -= 2; break; 1404 case 6: reg -= 4; break; 1405 default: 1406 (*_bfd_error_handler) 1407 (_("%B: Only registers %%g[2367] can be declared using STT_REGISTER"), 1408 abfd); 1409 return FALSE; 1410 } 1411 1412 if (info->hash->creator != abfd->xvec 1413 || (abfd->flags & DYNAMIC) != 0) 1414 { 1415 /* STT_REGISTER only works when linking an elf64_sparc object. 1416 If STT_REGISTER comes from a dynamic object, don't put it into 1417 the output bfd. The dynamic linker will recheck it. */ 1418 *namep = NULL; 1419 return TRUE; 1420 } 1421 1422 p = sparc64_elf_hash_table(info)->app_regs + reg; 1423 1424 if (p->name != NULL && strcmp (p->name, *namep)) 1425 { 1426 (*_bfd_error_handler) 1427 (_("Register %%g%d used incompatibly: %s in %B, previously %s in %B"), 1428 abfd, p->abfd, (int) sym->st_value, 1429 **namep ? *namep : "#scratch", 1430 *p->name ? p->name : "#scratch"); 1431 return FALSE; 1432 } 1433 1434 if (p->name == NULL) 1435 { 1436 if (**namep) 1437 { 1438 struct elf_link_hash_entry *h; 1439 1440 h = (struct elf_link_hash_entry *) 1441 bfd_link_hash_lookup (info->hash, *namep, FALSE, FALSE, FALSE); 1442 1443 if (h != NULL) 1444 { 1445 unsigned char type = h->type; 1446 1447 if (type > STT_FUNC) 1448 type = 0; 1449 (*_bfd_error_handler) 1450 (_("Symbol `%s' has differing types: REGISTER in %B, previously %s in %B"), 1451 abfd, p->abfd, *namep, stt_types[type]); 1452 return FALSE; 1453 } 1454 1455 p->name = bfd_hash_allocate (&info->hash->table, 1456 strlen (*namep) + 1); 1457 if (!p->name) 1458 return FALSE; 1459 1460 strcpy (p->name, *namep); 1461 } 1462 else 1463 p->name = ""; 1464 p->bind = ELF_ST_BIND (sym->st_info); 1465 p->abfd = abfd; 1466 p->shndx = sym->st_shndx; 1467 } 1468 else 1469 { 1470 if (p->bind == STB_WEAK 1471 && ELF_ST_BIND (sym->st_info) == STB_GLOBAL) 1472 { 1473 p->bind = STB_GLOBAL; 1474 p->abfd = abfd; 1475 } 1476 } 1477 *namep = NULL; 1478 return TRUE; 1479 } 1480 else if (*namep && **namep 1481 && info->hash->creator == abfd->xvec) 1482 { 1483 int i; 1484 struct sparc64_elf_app_reg *p; 1485 1486 p = sparc64_elf_hash_table(info)->app_regs; 1487 for (i = 0; i < 4; i++, p++) 1488 if (p->name != NULL && ! strcmp (p->name, *namep)) 1489 { 1490 unsigned char type = ELF_ST_TYPE (sym->st_info); 1491 1492 if (type > STT_FUNC) 1493 type = 0; 1494 (*_bfd_error_handler) 1495 (_("Symbol `%s' has differing types: %s in %B, previously REGISTER in %B"), 1496 abfd, p->abfd, *namep, stt_types[type]); 1497 return FALSE; 1498 } 1499 } 1500 return TRUE; 1501} 1502 1503/* This function takes care of emitting STT_REGISTER symbols 1504 which we cannot easily keep in the symbol hash table. */ 1505 1506static bfd_boolean 1507sparc64_elf_output_arch_syms (output_bfd, info, finfo, func) 1508 bfd *output_bfd ATTRIBUTE_UNUSED; 1509 struct bfd_link_info *info; 1510 PTR finfo; 1511 bfd_boolean (*func) 1512 PARAMS ((PTR, const char *, Elf_Internal_Sym *, asection *, 1513 struct elf_link_hash_entry *)); 1514{ 1515 int reg; 1516 struct sparc64_elf_app_reg *app_regs = 1517 sparc64_elf_hash_table(info)->app_regs; 1518 Elf_Internal_Sym sym; 1519 1520 /* We arranged in size_dynamic_sections to put the STT_REGISTER entries 1521 at the end of the dynlocal list, so they came at the end of the local 1522 symbols in the symtab. Except that they aren't STB_LOCAL, so we need 1523 to back up symtab->sh_info. */ 1524 if (elf_hash_table (info)->dynlocal) 1525 { 1526 bfd * dynobj = elf_hash_table (info)->dynobj; 1527 asection *dynsymsec = bfd_get_section_by_name (dynobj, ".dynsym"); 1528 struct elf_link_local_dynamic_entry *e; 1529 1530 for (e = elf_hash_table (info)->dynlocal; e ; e = e->next) 1531 if (e->input_indx == -1) 1532 break; 1533 if (e) 1534 { 1535 elf_section_data (dynsymsec->output_section)->this_hdr.sh_info 1536 = e->dynindx; 1537 } 1538 } 1539 1540 if (info->strip == strip_all) 1541 return TRUE; 1542 1543 for (reg = 0; reg < 4; reg++) 1544 if (app_regs [reg].name != NULL) 1545 { 1546 if (info->strip == strip_some 1547 && bfd_hash_lookup (info->keep_hash, 1548 app_regs [reg].name, 1549 FALSE, FALSE) == NULL) 1550 continue; 1551 1552 sym.st_value = reg < 2 ? reg + 2 : reg + 4; 1553 sym.st_size = 0; 1554 sym.st_other = 0; 1555 sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER); 1556 sym.st_shndx = app_regs [reg].shndx; 1557 if (! (*func) (finfo, app_regs [reg].name, &sym, 1558 sym.st_shndx == SHN_ABS 1559 ? bfd_abs_section_ptr : bfd_und_section_ptr, 1560 NULL)) 1561 return FALSE; 1562 } 1563 1564 return TRUE; 1565} 1566 1567static int 1568sparc64_elf_get_symbol_type (elf_sym, type) 1569 Elf_Internal_Sym * elf_sym; 1570 int type; 1571{ 1572 if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER) 1573 return STT_REGISTER; 1574 else 1575 return type; 1576} 1577 1578/* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL 1579 even in SHN_UNDEF section. */ 1580 1581static void 1582sparc64_elf_symbol_processing (abfd, asym) 1583 bfd *abfd ATTRIBUTE_UNUSED; 1584 asymbol *asym; 1585{ 1586 elf_symbol_type *elfsym; 1587 1588 elfsym = (elf_symbol_type *) asym; 1589 if (elfsym->internal_elf_sym.st_info 1590 == ELF_ST_INFO (STB_GLOBAL, STT_REGISTER)) 1591 { 1592 asym->flags |= BSF_GLOBAL; 1593 } 1594} 1595 1596/* Adjust a symbol defined by a dynamic object and referenced by a 1597 regular object. The current definition is in some section of the 1598 dynamic object, but we're not including those sections. We have to 1599 change the definition to something the rest of the link can 1600 understand. */ 1601 1602static bfd_boolean 1603sparc64_elf_adjust_dynamic_symbol (info, h) 1604 struct bfd_link_info *info; 1605 struct elf_link_hash_entry *h; 1606{ 1607 bfd *dynobj; 1608 asection *s; 1609 unsigned int power_of_two; 1610 1611 dynobj = elf_hash_table (info)->dynobj; 1612 1613 /* Make sure we know what is going on here. */ 1614 BFD_ASSERT (dynobj != NULL 1615 && (h->needs_plt 1616 || h->u.weakdef != NULL 1617 || (h->def_dynamic 1618 && h->ref_regular 1619 && !h->def_regular))); 1620 1621 /* If this is a function, put it in the procedure linkage table. We 1622 will fill in the contents of the procedure linkage table later 1623 (although we could actually do it here). The STT_NOTYPE 1624 condition is a hack specifically for the Oracle libraries 1625 delivered for Solaris; for some inexplicable reason, they define 1626 some of their functions as STT_NOTYPE when they really should be 1627 STT_FUNC. */ 1628 if (h->type == STT_FUNC 1629 || h->needs_plt 1630 || (h->type == STT_NOTYPE 1631 && (h->root.type == bfd_link_hash_defined 1632 || h->root.type == bfd_link_hash_defweak) 1633 && (h->root.u.def.section->flags & SEC_CODE) != 0)) 1634 { 1635 if (! elf_hash_table (info)->dynamic_sections_created) 1636 { 1637 /* This case can occur if we saw a WPLT30 reloc in an input 1638 file, but none of the input files were dynamic objects. 1639 In such a case, we don't actually need to build a 1640 procedure linkage table, and we can just do a WDISP30 1641 reloc instead. */ 1642 BFD_ASSERT (h->needs_plt); 1643 return TRUE; 1644 } 1645 1646 s = bfd_get_section_by_name (dynobj, ".plt"); 1647 BFD_ASSERT (s != NULL); 1648 1649 /* The first four bit in .plt is reserved. */ 1650 if (s->size == 0) 1651 s->size = PLT_HEADER_SIZE; 1652 1653 /* To simplify matters later, just store the plt index here. */ 1654 h->plt.offset = s->size / PLT_ENTRY_SIZE; 1655 1656 /* If this symbol is not defined in a regular file, and we are 1657 not generating a shared library, then set the symbol to this 1658 location in the .plt. This is required to make function 1659 pointers compare as equal between the normal executable and 1660 the shared library. */ 1661 if (! info->shared 1662 && !h->def_regular) 1663 { 1664 h->root.u.def.section = s; 1665 h->root.u.def.value = sparc64_elf_plt_entry_offset (h->plt.offset); 1666 } 1667 1668 /* Make room for this entry. */ 1669 s->size += PLT_ENTRY_SIZE; 1670 1671 /* We also need to make an entry in the .rela.plt section. */ 1672 1673 s = bfd_get_section_by_name (dynobj, ".rela.plt"); 1674 BFD_ASSERT (s != NULL); 1675 1676 s->size += sizeof (Elf64_External_Rela); 1677 1678 /* The procedure linkage table size is bounded by the magnitude 1679 of the offset we can describe in the entry. */ 1680 if (s->size >= (bfd_vma)1 << 32) 1681 { 1682 bfd_set_error (bfd_error_bad_value); 1683 return FALSE; 1684 } 1685 1686 return TRUE; 1687 } 1688 1689 /* If this is a weak symbol, and there is a real definition, the 1690 processor independent code will have arranged for us to see the 1691 real definition first, and we can just use the same value. */ 1692 if (h->u.weakdef != NULL) 1693 { 1694 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined 1695 || h->u.weakdef->root.type == bfd_link_hash_defweak); 1696 h->root.u.def.section = h->u.weakdef->root.u.def.section; 1697 h->root.u.def.value = h->u.weakdef->root.u.def.value; 1698 return TRUE; 1699 } 1700 1701 /* This is a reference to a symbol defined by a dynamic object which 1702 is not a function. */ 1703 1704 /* If we are creating a shared library, we must presume that the 1705 only references to the symbol are via the global offset table. 1706 For such cases we need not do anything here; the relocations will 1707 be handled correctly by relocate_section. */ 1708 if (info->shared) 1709 return TRUE; 1710 1711 /* We must allocate the symbol in our .dynbss section, which will 1712 become part of the .bss section of the executable. There will be 1713 an entry for this symbol in the .dynsym section. The dynamic 1714 object will contain position independent code, so all references 1715 from the dynamic object to this symbol will go through the global 1716 offset table. The dynamic linker will use the .dynsym entry to 1717 determine the address it must put in the global offset table, so 1718 both the dynamic object and the regular object will refer to the 1719 same memory location for the variable. */ 1720 1721 s = bfd_get_section_by_name (dynobj, ".dynbss"); 1722 BFD_ASSERT (s != NULL); 1723 1724 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker 1725 to copy the initial value out of the dynamic object and into the 1726 runtime process image. We need to remember the offset into the 1727 .rel.bss section we are going to use. */ 1728 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) 1729 { 1730 asection *srel; 1731 1732 srel = bfd_get_section_by_name (dynobj, ".rela.bss"); 1733 BFD_ASSERT (srel != NULL); 1734 srel->size += sizeof (Elf64_External_Rela); 1735 h->needs_copy = 1; 1736 } 1737 1738 /* We need to figure out the alignment required for this symbol. I 1739 have no idea how ELF linkers handle this. 16-bytes is the size 1740 of the largest type that requires hard alignment -- long double. */ 1741 power_of_two = bfd_log2 (h->size); 1742 if (power_of_two > 4) 1743 power_of_two = 4; 1744 1745 /* Apply the required alignment. */ 1746 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); 1747 if (power_of_two > bfd_get_section_alignment (dynobj, s)) 1748 { 1749 if (! bfd_set_section_alignment (dynobj, s, power_of_two)) 1750 return FALSE; 1751 } 1752 1753 /* Define the symbol as being at this point in the section. */ 1754 h->root.u.def.section = s; 1755 h->root.u.def.value = s->size; 1756 1757 /* Increment the section size to make room for the symbol. */ 1758 s->size += h->size; 1759 1760 return TRUE; 1761} 1762 1763/* Set the sizes of the dynamic sections. */ 1764 1765static bfd_boolean 1766sparc64_elf_size_dynamic_sections (output_bfd, info) 1767 bfd *output_bfd; 1768 struct bfd_link_info *info; 1769{ 1770 bfd *dynobj; 1771 asection *s; 1772 bfd_boolean relplt; 1773 1774 dynobj = elf_hash_table (info)->dynobj; 1775 BFD_ASSERT (dynobj != NULL); 1776 1777 if (elf_hash_table (info)->dynamic_sections_created) 1778 { 1779 /* Set the contents of the .interp section to the interpreter. */ 1780 if (info->executable) 1781 { 1782 s = bfd_get_section_by_name (dynobj, ".interp"); 1783 BFD_ASSERT (s != NULL); 1784 s->size = sizeof ELF_DYNAMIC_INTERPRETER; 1785 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; 1786 } 1787 } 1788 else 1789 { 1790 /* We may have created entries in the .rela.got section. 1791 However, if we are not creating the dynamic sections, we will 1792 not actually use these entries. Reset the size of .rela.got, 1793 which will cause it to get stripped from the output file 1794 below. */ 1795 s = bfd_get_section_by_name (dynobj, ".rela.got"); 1796 if (s != NULL) 1797 s->size = 0; 1798 } 1799 1800 /* The check_relocs and adjust_dynamic_symbol entry points have 1801 determined the sizes of the various dynamic sections. Allocate 1802 memory for them. */ 1803 relplt = FALSE; 1804 for (s = dynobj->sections; s != NULL; s = s->next) 1805 { 1806 const char *name; 1807 bfd_boolean strip; 1808 1809 if ((s->flags & SEC_LINKER_CREATED) == 0) 1810 continue; 1811 1812 /* It's OK to base decisions on the section name, because none 1813 of the dynobj section names depend upon the input files. */ 1814 name = bfd_get_section_name (dynobj, s); 1815 1816 strip = FALSE; 1817 1818 if (strncmp (name, ".rela", 5) == 0) 1819 { 1820 if (s->size == 0) 1821 { 1822 /* If we don't need this section, strip it from the 1823 output file. This is to handle .rela.bss and 1824 .rel.plt. We must create it in 1825 create_dynamic_sections, because it must be created 1826 before the linker maps input sections to output 1827 sections. The linker does that before 1828 adjust_dynamic_symbol is called, and it is that 1829 function which decides whether anything needs to go 1830 into these sections. */ 1831 strip = TRUE; 1832 } 1833 else 1834 { 1835 if (strcmp (name, ".rela.plt") == 0) 1836 relplt = TRUE; 1837 1838 /* We use the reloc_count field as a counter if we need 1839 to copy relocs into the output file. */ 1840 s->reloc_count = 0; 1841 } 1842 } 1843 else if (strcmp (name, ".plt") != 0 1844 && strncmp (name, ".got", 4) != 0) 1845 { 1846 /* It's not one of our sections, so don't allocate space. */ 1847 continue; 1848 } 1849 1850 if (strip) 1851 { 1852 _bfd_strip_section_from_output (info, s); 1853 continue; 1854 } 1855 1856 /* Allocate memory for the section contents. Zero the memory 1857 for the benefit of .rela.plt, which has 4 unused entries 1858 at the beginning, and we don't want garbage. */ 1859 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); 1860 if (s->contents == NULL && s->size != 0) 1861 return FALSE; 1862 } 1863 1864 if (elf_hash_table (info)->dynamic_sections_created) 1865 { 1866 /* Add some entries to the .dynamic section. We fill in the 1867 values later, in sparc64_elf_finish_dynamic_sections, but we 1868 must add the entries now so that we get the correct size for 1869 the .dynamic section. The DT_DEBUG entry is filled in by the 1870 dynamic linker and used by the debugger. */ 1871#define add_dynamic_entry(TAG, VAL) \ 1872 _bfd_elf_add_dynamic_entry (info, TAG, VAL) 1873 1874 int reg; 1875 struct sparc64_elf_app_reg * app_regs; 1876 struct elf_strtab_hash *dynstr; 1877 struct elf_link_hash_table *eht = elf_hash_table (info); 1878 1879 if (info->executable) 1880 { 1881 if (!add_dynamic_entry (DT_DEBUG, 0)) 1882 return FALSE; 1883 } 1884 1885 if (relplt) 1886 { 1887 if (!add_dynamic_entry (DT_PLTGOT, 0) 1888 || !add_dynamic_entry (DT_PLTRELSZ, 0) 1889 || !add_dynamic_entry (DT_PLTREL, DT_RELA) 1890 || !add_dynamic_entry (DT_JMPREL, 0)) 1891 return FALSE; 1892 } 1893 1894 if (!add_dynamic_entry (DT_RELA, 0) 1895 || !add_dynamic_entry (DT_RELASZ, 0) 1896 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) 1897 return FALSE; 1898 1899 if (info->flags & DF_TEXTREL) 1900 { 1901 if (!add_dynamic_entry (DT_TEXTREL, 0)) 1902 return FALSE; 1903 } 1904 1905 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER 1906 entries if needed. */ 1907 app_regs = sparc64_elf_hash_table (info)->app_regs; 1908 dynstr = eht->dynstr; 1909 1910 for (reg = 0; reg < 4; reg++) 1911 if (app_regs [reg].name != NULL) 1912 { 1913 struct elf_link_local_dynamic_entry *entry, *e; 1914 1915 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0)) 1916 return FALSE; 1917 1918 entry = (struct elf_link_local_dynamic_entry *) 1919 bfd_hash_allocate (&info->hash->table, sizeof (*entry)); 1920 if (entry == NULL) 1921 return FALSE; 1922 1923 /* We cheat here a little bit: the symbol will not be local, so we 1924 put it at the end of the dynlocal linked list. We will fix it 1925 later on, as we have to fix other fields anyway. */ 1926 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4; 1927 entry->isym.st_size = 0; 1928 if (*app_regs [reg].name != '\0') 1929 entry->isym.st_name 1930 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, FALSE); 1931 else 1932 entry->isym.st_name = 0; 1933 entry->isym.st_other = 0; 1934 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind, 1935 STT_REGISTER); 1936 entry->isym.st_shndx = app_regs [reg].shndx; 1937 entry->next = NULL; 1938 entry->input_bfd = output_bfd; 1939 entry->input_indx = -1; 1940 1941 if (eht->dynlocal == NULL) 1942 eht->dynlocal = entry; 1943 else 1944 { 1945 for (e = eht->dynlocal; e->next; e = e->next) 1946 ; 1947 e->next = entry; 1948 } 1949 eht->dynsymcount++; 1950 } 1951 } 1952#undef add_dynamic_entry 1953 1954 return TRUE; 1955} 1956 1957static bfd_boolean 1958sparc64_elf_new_section_hook (abfd, sec) 1959 bfd *abfd; 1960 asection *sec; 1961{ 1962 struct sparc64_elf_section_data *sdata; 1963 bfd_size_type amt = sizeof (*sdata); 1964 1965 sdata = (struct sparc64_elf_section_data *) bfd_zalloc (abfd, amt); 1966 if (sdata == NULL) 1967 return FALSE; 1968 sec->used_by_bfd = (PTR) sdata; 1969 1970 return _bfd_elf_new_section_hook (abfd, sec); 1971} 1972 1973static bfd_boolean 1974sparc64_elf_relax_section (abfd, section, link_info, again) 1975 bfd *abfd ATTRIBUTE_UNUSED; 1976 asection *section ATTRIBUTE_UNUSED; 1977 struct bfd_link_info *link_info ATTRIBUTE_UNUSED; 1978 bfd_boolean *again; 1979{ 1980 *again = FALSE; 1981 sec_do_relax (section) = 1; 1982 return TRUE; 1983} 1984 1985/* Relocate a SPARC64 ELF section. */ 1986 1987static bfd_boolean 1988sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, 1989 contents, relocs, local_syms, local_sections) 1990 bfd *output_bfd; 1991 struct bfd_link_info *info; 1992 bfd *input_bfd; 1993 asection *input_section; 1994 bfd_byte *contents; 1995 Elf_Internal_Rela *relocs; 1996 Elf_Internal_Sym *local_syms; 1997 asection **local_sections; 1998{ 1999 bfd *dynobj; 2000 Elf_Internal_Shdr *symtab_hdr; 2001 struct elf_link_hash_entry **sym_hashes; 2002 bfd_vma *local_got_offsets; 2003 bfd_vma got_base; 2004 asection *sgot; 2005 asection *splt; 2006 asection *sreloc; 2007 Elf_Internal_Rela *rel; 2008 Elf_Internal_Rela *relend; 2009 2010 if (info->relocatable) 2011 return TRUE; 2012 2013 dynobj = elf_hash_table (info)->dynobj; 2014 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; 2015 sym_hashes = elf_sym_hashes (input_bfd); 2016 local_got_offsets = elf_local_got_offsets (input_bfd); 2017 2018 if (elf_hash_table(info)->hgot == NULL) 2019 got_base = 0; 2020 else 2021 got_base = elf_hash_table (info)->hgot->root.u.def.value; 2022 2023 sgot = splt = sreloc = NULL; 2024 if (dynobj != NULL) 2025 splt = bfd_get_section_by_name (dynobj, ".plt"); 2026 2027 rel = relocs; 2028 relend = relocs + NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr); 2029 for (; rel < relend; rel++) 2030 { 2031 int r_type; 2032 reloc_howto_type *howto; 2033 unsigned long r_symndx; 2034 struct elf_link_hash_entry *h; 2035 Elf_Internal_Sym *sym; 2036 asection *sec; 2037 bfd_vma relocation, off; 2038 bfd_reloc_status_type r; 2039 bfd_boolean is_plt = FALSE; 2040 bfd_boolean unresolved_reloc; 2041 2042 r_type = ELF64_R_TYPE_ID (rel->r_info); 2043 if (r_type < 0 || r_type >= (int) R_SPARC_max_std) 2044 { 2045 bfd_set_error (bfd_error_bad_value); 2046 return FALSE; 2047 } 2048 howto = sparc64_elf_howto_table + r_type; 2049 2050 /* This is a final link. */ 2051 r_symndx = ELF64_R_SYM (rel->r_info); 2052 h = NULL; 2053 sym = NULL; 2054 sec = NULL; 2055 unresolved_reloc = FALSE; 2056 if (r_symndx < symtab_hdr->sh_info) 2057 { 2058 sym = local_syms + r_symndx; 2059 sec = local_sections[r_symndx]; 2060 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); 2061 } 2062 else 2063 { 2064 bfd_boolean warned; 2065 2066 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, 2067 r_symndx, symtab_hdr, sym_hashes, 2068 h, sec, relocation, 2069 unresolved_reloc, warned); 2070 if (warned) 2071 { 2072 /* To avoid generating warning messages about truncated 2073 relocations, set the relocation's address to be the same as 2074 the start of this section. */ 2075 if (input_section->output_section != NULL) 2076 relocation = input_section->output_section->vma; 2077 else 2078 relocation = 0; 2079 } 2080 } 2081 2082 do_dynreloc: 2083 /* When generating a shared object, these relocations are copied 2084 into the output file to be resolved at run time. */ 2085 if (info->shared && r_symndx != 0 && (input_section->flags & SEC_ALLOC)) 2086 { 2087 switch (r_type) 2088 { 2089 case R_SPARC_PC10: 2090 case R_SPARC_PC22: 2091 case R_SPARC_PC_HH22: 2092 case R_SPARC_PC_HM10: 2093 case R_SPARC_PC_LM22: 2094 if (h != NULL 2095 && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) 2096 break; 2097 /* Fall through. */ 2098 case R_SPARC_DISP8: 2099 case R_SPARC_DISP16: 2100 case R_SPARC_DISP32: 2101 case R_SPARC_DISP64: 2102 case R_SPARC_WDISP30: 2103 case R_SPARC_WDISP22: 2104 case R_SPARC_WDISP19: 2105 case R_SPARC_WDISP16: 2106 if (h == NULL) 2107 break; 2108 /* Fall through. */ 2109 case R_SPARC_8: 2110 case R_SPARC_16: 2111 case R_SPARC_32: 2112 case R_SPARC_HI22: 2113 case R_SPARC_22: 2114 case R_SPARC_13: 2115 case R_SPARC_LO10: 2116 case R_SPARC_UA32: 2117 case R_SPARC_10: 2118 case R_SPARC_11: 2119 case R_SPARC_64: 2120 case R_SPARC_OLO10: 2121 case R_SPARC_HH22: 2122 case R_SPARC_HM10: 2123 case R_SPARC_LM22: 2124 case R_SPARC_7: 2125 case R_SPARC_5: 2126 case R_SPARC_6: 2127 case R_SPARC_HIX22: 2128 case R_SPARC_LOX10: 2129 case R_SPARC_H44: 2130 case R_SPARC_M44: 2131 case R_SPARC_L44: 2132 case R_SPARC_UA64: 2133 case R_SPARC_UA16: 2134 { 2135 Elf_Internal_Rela outrel; 2136 bfd_byte *loc; 2137 bfd_boolean skip, relocate; 2138 2139 if (sreloc == NULL) 2140 { 2141 const char *name = 2142 (bfd_elf_string_from_elf_section 2143 (input_bfd, 2144 elf_elfheader (input_bfd)->e_shstrndx, 2145 elf_section_data (input_section)->rel_hdr.sh_name)); 2146 2147 if (name == NULL) 2148 return FALSE; 2149 2150 BFD_ASSERT (strncmp (name, ".rela", 5) == 0 2151 && strcmp (bfd_get_section_name(input_bfd, 2152 input_section), 2153 name + 5) == 0); 2154 2155 sreloc = bfd_get_section_by_name (dynobj, name); 2156 BFD_ASSERT (sreloc != NULL); 2157 } 2158 2159 skip = FALSE; 2160 relocate = FALSE; 2161 2162 outrel.r_offset = 2163 _bfd_elf_section_offset (output_bfd, info, input_section, 2164 rel->r_offset); 2165 if (outrel.r_offset == (bfd_vma) -1) 2166 skip = TRUE; 2167 else if (outrel.r_offset == (bfd_vma) -2) 2168 skip = TRUE, relocate = TRUE; 2169 2170 outrel.r_offset += (input_section->output_section->vma 2171 + input_section->output_offset); 2172 2173 /* Optimize unaligned reloc usage now that we know where 2174 it finally resides. */ 2175 switch (r_type) 2176 { 2177 case R_SPARC_16: 2178 if (outrel.r_offset & 1) r_type = R_SPARC_UA16; 2179 break; 2180 case R_SPARC_UA16: 2181 if (!(outrel.r_offset & 1)) r_type = R_SPARC_16; 2182 break; 2183 case R_SPARC_32: 2184 if (outrel.r_offset & 3) r_type = R_SPARC_UA32; 2185 break; 2186 case R_SPARC_UA32: 2187 if (!(outrel.r_offset & 3)) r_type = R_SPARC_32; 2188 break; 2189 case R_SPARC_64: 2190 if (outrel.r_offset & 7) r_type = R_SPARC_UA64; 2191 break; 2192 case R_SPARC_UA64: 2193 if (!(outrel.r_offset & 7)) r_type = R_SPARC_64; 2194 break; 2195 case R_SPARC_DISP8: 2196 case R_SPARC_DISP16: 2197 case R_SPARC_DISP32: 2198 case R_SPARC_DISP64: 2199 /* If the symbol is not dynamic, we should not keep 2200 a dynamic relocation. But an .rela.* slot has been 2201 allocated for it, output R_SPARC_NONE. 2202 FIXME: Add code tracking needed dynamic relocs as 2203 e.g. i386 has. */ 2204 if (h->dynindx == -1) 2205 skip = TRUE, relocate = TRUE; 2206 break; 2207 } 2208 2209 /* FIXME: Dynamic reloc handling really needs to be rewritten. */ 2210 if (!skip 2211 && h != NULL 2212 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT 2213 && h->root.type == bfd_link_hash_undefweak) 2214 skip = TRUE, relocate = TRUE; 2215 2216 if (skip) 2217 memset (&outrel, 0, sizeof outrel); 2218 /* h->dynindx may be -1 if the symbol was marked to 2219 become local. */ 2220 else if (h != NULL && ! is_plt 2221 && ((! info->symbolic && h->dynindx != -1) 2222 || !h->def_regular)) 2223 { 2224 BFD_ASSERT (h->dynindx != -1); 2225 outrel.r_info 2226 = ELF64_R_INFO (h->dynindx, 2227 ELF64_R_TYPE_INFO ( 2228 ELF64_R_TYPE_DATA (rel->r_info), 2229 r_type)); 2230 outrel.r_addend = rel->r_addend; 2231 } 2232 else 2233 { 2234 outrel.r_addend = relocation + rel->r_addend; 2235 if (r_type == R_SPARC_64) 2236 outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); 2237 else 2238 { 2239 long indx; 2240 2241 if (is_plt) 2242 sec = splt; 2243 2244 if (bfd_is_abs_section (sec)) 2245 indx = 0; 2246 else if (sec == NULL || sec->owner == NULL) 2247 { 2248 bfd_set_error (bfd_error_bad_value); 2249 return FALSE; 2250 } 2251 else 2252 { 2253 asection *osec; 2254 2255 osec = sec->output_section; 2256 indx = elf_section_data (osec)->dynindx; 2257 2258 /* We are turning this relocation into one 2259 against a section symbol, so subtract out 2260 the output section's address but not the 2261 offset of the input section in the output 2262 section. */ 2263 outrel.r_addend -= osec->vma; 2264 2265 /* FIXME: we really should be able to link non-pic 2266 shared libraries. */ 2267 if (indx == 0) 2268 { 2269 BFD_FAIL (); 2270 (*_bfd_error_handler) 2271 (_("%B: probably compiled without -fPIC?"), 2272 input_bfd); 2273 bfd_set_error (bfd_error_bad_value); 2274 return FALSE; 2275 } 2276 } 2277 2278 outrel.r_info 2279 = ELF64_R_INFO (indx, 2280 ELF64_R_TYPE_INFO ( 2281 ELF64_R_TYPE_DATA (rel->r_info), 2282 r_type)); 2283 } 2284 } 2285 2286 loc = sreloc->contents; 2287 loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); 2288 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); 2289 2290 /* This reloc will be computed at runtime, so there's no 2291 need to do anything now. */ 2292 if (! relocate) 2293 continue; 2294 } 2295 break; 2296 } 2297 } 2298 2299 switch (r_type) 2300 { 2301 case R_SPARC_GOT10: 2302 case R_SPARC_GOT13: 2303 case R_SPARC_GOT22: 2304 /* Relocation is to the entry for this symbol in the global 2305 offset table. */ 2306 if (sgot == NULL) 2307 { 2308 sgot = bfd_get_section_by_name (dynobj, ".got"); 2309 BFD_ASSERT (sgot != NULL); 2310 } 2311 2312 if (h != NULL) 2313 { 2314 bfd_boolean dyn; 2315 2316 off = h->got.offset; 2317 BFD_ASSERT (off != (bfd_vma) -1); 2318 dyn = elf_hash_table (info)->dynamic_sections_created; 2319 2320 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) 2321 || (info->shared 2322 && (info->symbolic 2323 || h->dynindx == -1 2324 || h->forced_local) 2325 && h->def_regular)) 2326 { 2327 /* This is actually a static link, or it is a -Bsymbolic 2328 link and the symbol is defined locally, or the symbol 2329 was forced to be local because of a version file. We 2330 must initialize this entry in the global offset table. 2331 Since the offset must always be a multiple of 8, we 2332 use the least significant bit to record whether we 2333 have initialized it already. 2334 2335 When doing a dynamic link, we create a .rela.got 2336 relocation entry to initialize the value. This is 2337 done in the finish_dynamic_symbol routine. */ 2338 2339 if ((off & 1) != 0) 2340 off &= ~1; 2341 else 2342 { 2343 bfd_put_64 (output_bfd, relocation, 2344 sgot->contents + off); 2345 h->got.offset |= 1; 2346 } 2347 } 2348 else 2349 unresolved_reloc = FALSE; 2350 } 2351 else 2352 { 2353 BFD_ASSERT (local_got_offsets != NULL); 2354 off = local_got_offsets[r_symndx]; 2355 BFD_ASSERT (off != (bfd_vma) -1); 2356 2357 /* The offset must always be a multiple of 8. We use 2358 the least significant bit to record whether we have 2359 already processed this entry. */ 2360 if ((off & 1) != 0) 2361 off &= ~1; 2362 else 2363 { 2364 local_got_offsets[r_symndx] |= 1; 2365 2366 if (info->shared) 2367 { 2368 asection *s; 2369 Elf_Internal_Rela outrel; 2370 bfd_byte *loc; 2371 2372 /* The Solaris 2.7 64-bit linker adds the contents 2373 of the location to the value of the reloc. 2374 Note this is different behaviour to the 2375 32-bit linker, which both adds the contents 2376 and ignores the addend. So clear the location. */ 2377 bfd_put_64 (output_bfd, (bfd_vma) 0, 2378 sgot->contents + off); 2379 2380 /* We need to generate a R_SPARC_RELATIVE reloc 2381 for the dynamic linker. */ 2382 s = bfd_get_section_by_name(dynobj, ".rela.got"); 2383 BFD_ASSERT (s != NULL); 2384 2385 outrel.r_offset = (sgot->output_section->vma 2386 + sgot->output_offset 2387 + off); 2388 outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); 2389 outrel.r_addend = relocation; 2390 loc = s->contents; 2391 loc += s->reloc_count++ * sizeof (Elf64_External_Rela); 2392 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); 2393 } 2394 else 2395 bfd_put_64 (output_bfd, relocation, sgot->contents + off); 2396 } 2397 } 2398 relocation = sgot->output_offset + off - got_base; 2399 goto do_default; 2400 2401 case R_SPARC_WPLT30: 2402 case R_SPARC_PLT32: 2403 case R_SPARC_HIPLT22: 2404 case R_SPARC_LOPLT10: 2405 case R_SPARC_PCPLT32: 2406 case R_SPARC_PCPLT22: 2407 case R_SPARC_PCPLT10: 2408 case R_SPARC_PLT64: 2409 /* Relocation is to the entry for this symbol in the 2410 procedure linkage table. */ 2411 BFD_ASSERT (h != NULL); 2412 2413 if (h->plt.offset == (bfd_vma) -1 || splt == NULL) 2414 { 2415 /* We didn't make a PLT entry for this symbol. This 2416 happens when statically linking PIC code, or when 2417 using -Bsymbolic. */ 2418 goto do_default; 2419 } 2420 2421 relocation = (splt->output_section->vma 2422 + splt->output_offset 2423 + sparc64_elf_plt_entry_offset (h->plt.offset)); 2424 unresolved_reloc = FALSE; 2425 if (r_type == R_SPARC_WPLT30) 2426 goto do_wplt30; 2427 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64) 2428 { 2429 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64; 2430 is_plt = TRUE; 2431 goto do_dynreloc; 2432 } 2433 goto do_default; 2434 2435 case R_SPARC_OLO10: 2436 { 2437 bfd_vma x; 2438 2439 relocation += rel->r_addend; 2440 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info); 2441 2442 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2443 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff); 2444 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2445 2446 r = bfd_check_overflow (howto->complain_on_overflow, 2447 howto->bitsize, howto->rightshift, 2448 bfd_arch_bits_per_address (input_bfd), 2449 relocation); 2450 } 2451 break; 2452 2453 case R_SPARC_WDISP16: 2454 { 2455 bfd_vma x; 2456 2457 relocation += rel->r_addend; 2458 /* Adjust for pc-relative-ness. */ 2459 relocation -= (input_section->output_section->vma 2460 + input_section->output_offset); 2461 relocation -= rel->r_offset; 2462 2463 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2464 x &= ~(bfd_vma) 0x303fff; 2465 x |= ((((relocation >> 2) & 0xc000) << 6) 2466 | ((relocation >> 2) & 0x3fff)); 2467 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2468 2469 r = bfd_check_overflow (howto->complain_on_overflow, 2470 howto->bitsize, howto->rightshift, 2471 bfd_arch_bits_per_address (input_bfd), 2472 relocation); 2473 } 2474 break; 2475 2476 case R_SPARC_HIX22: 2477 { 2478 bfd_vma x; 2479 2480 relocation += rel->r_addend; 2481 relocation = relocation ^ MINUS_ONE; 2482 2483 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2484 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff); 2485 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2486 2487 r = bfd_check_overflow (howto->complain_on_overflow, 2488 howto->bitsize, howto->rightshift, 2489 bfd_arch_bits_per_address (input_bfd), 2490 relocation); 2491 } 2492 break; 2493 2494 case R_SPARC_LOX10: 2495 { 2496 bfd_vma x; 2497 2498 relocation += rel->r_addend; 2499 relocation = (relocation & 0x3ff) | 0x1c00; 2500 2501 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2502 x = (x & ~(bfd_vma) 0x1fff) | relocation; 2503 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2504 2505 r = bfd_reloc_ok; 2506 } 2507 break; 2508 2509 case R_SPARC_WDISP30: 2510 do_wplt30: 2511 if (sec_do_relax (input_section) 2512 && rel->r_offset + 4 < input_section->size) 2513 { 2514#define G0 0 2515#define O7 15 2516#define XCC (2 << 20) 2517#define COND(x) (((x)&0xf)<<25) 2518#define CONDA COND(0x8) 2519#define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC) 2520#define INSN_BA (F2(0,2) | CONDA) 2521#define INSN_OR F3(2, 0x2, 0) 2522#define INSN_NOP F2(0,4) 2523 2524 bfd_vma x, y; 2525 2526 /* If the instruction is a call with either: 2527 restore 2528 arithmetic instruction with rd == %o7 2529 where rs1 != %o7 and rs2 if it is register != %o7 2530 then we can optimize if the call destination is near 2531 by changing the call into a branch always. */ 2532 x = bfd_get_32 (input_bfd, contents + rel->r_offset); 2533 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); 2534 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2)) 2535 { 2536 if (((y & OP3(~0)) == OP3(0x3d) /* restore */ 2537 || ((y & OP3(0x28)) == 0 /* arithmetic */ 2538 && (y & RD(~0)) == RD(O7))) 2539 && (y & RS1(~0)) != RS1(O7) 2540 && ((y & F3I(~0)) 2541 || (y & RS2(~0)) != RS2(O7))) 2542 { 2543 bfd_vma reloc; 2544 2545 reloc = relocation + rel->r_addend - rel->r_offset; 2546 reloc -= (input_section->output_section->vma 2547 + input_section->output_offset); 2548 if (reloc & 3) 2549 goto do_default; 2550 2551 /* Ensure the branch fits into simm22. */ 2552 if ((reloc & ~(bfd_vma)0x7fffff) 2553 && ((reloc | 0x7fffff) != MINUS_ONE)) 2554 goto do_default; 2555 reloc >>= 2; 2556 2557 /* Check whether it fits into simm19. */ 2558 if ((reloc & 0x3c0000) == 0 2559 || (reloc & 0x3c0000) == 0x3c0000) 2560 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */ 2561 else 2562 x = INSN_BA | (reloc & 0x3fffff); /* ba */ 2563 bfd_put_32 (input_bfd, x, contents + rel->r_offset); 2564 r = bfd_reloc_ok; 2565 if (rel->r_offset >= 4 2566 && (y & (0xffffffff ^ RS1(~0))) 2567 == (INSN_OR | RD(O7) | RS2(G0))) 2568 { 2569 bfd_vma z; 2570 unsigned int reg; 2571 2572 z = bfd_get_32 (input_bfd, 2573 contents + rel->r_offset - 4); 2574 if ((z & (0xffffffff ^ RD(~0))) 2575 != (INSN_OR | RS1(O7) | RS2(G0))) 2576 break; 2577 2578 /* The sequence was 2579 or %o7, %g0, %rN 2580 call foo 2581 or %rN, %g0, %o7 2582 2583 If call foo was replaced with ba, replace 2584 or %rN, %g0, %o7 with nop. */ 2585 2586 reg = (y & RS1(~0)) >> 14; 2587 if (reg != ((z & RD(~0)) >> 25) 2588 || reg == G0 || reg == O7) 2589 break; 2590 2591 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP, 2592 contents + rel->r_offset + 4); 2593 } 2594 break; 2595 } 2596 } 2597 } 2598 /* Fall through. */ 2599 2600 default: 2601 do_default: 2602 r = _bfd_final_link_relocate (howto, input_bfd, input_section, 2603 contents, rel->r_offset, 2604 relocation, rel->r_addend); 2605 break; 2606 } 2607 2608 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections 2609 because such sections are not SEC_ALLOC and thus ld.so will 2610 not process them. */ 2611 if (unresolved_reloc 2612 && !((input_section->flags & SEC_DEBUGGING) != 0 2613 && h->def_dynamic)) 2614 (*_bfd_error_handler) 2615 (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"), 2616 input_bfd, input_section, 2617 (long) rel->r_offset, 2618 h->root.root.string); 2619 2620 switch (r) 2621 { 2622 case bfd_reloc_ok: 2623 break; 2624 2625 default: 2626 case bfd_reloc_outofrange: 2627 abort (); 2628 2629 case bfd_reloc_overflow: 2630 { 2631 const char *name; 2632 2633 /* The Solaris native linker silently disregards 2634 overflows. We don't, but this breaks stabs debugging 2635 info, whose relocations are only 32-bits wide. Ignore 2636 overflows for discarded entries. */ 2637 if ((r_type == R_SPARC_32 || r_type == R_SPARC_DISP32) 2638 && _bfd_elf_section_offset (output_bfd, info, input_section, 2639 rel->r_offset) == (bfd_vma) -1) 2640 break; 2641 2642 if (h != NULL) 2643 { 2644 if (h->root.type == bfd_link_hash_undefweak 2645 && howto->pc_relative) 2646 { 2647 /* Assume this is a call protected by other code that 2648 detect the symbol is undefined. If this is the case, 2649 we can safely ignore the overflow. If not, the 2650 program is hosed anyway, and a little warning isn't 2651 going to help. */ 2652 break; 2653 } 2654 2655 name = h->root.root.string; 2656 } 2657 else 2658 { 2659 name = (bfd_elf_string_from_elf_section 2660 (input_bfd, 2661 symtab_hdr->sh_link, 2662 sym->st_name)); 2663 if (name == NULL) 2664 return FALSE; 2665 if (*name == '\0') 2666 name = bfd_section_name (input_bfd, sec); 2667 } 2668 if (! ((*info->callbacks->reloc_overflow) 2669 (info, name, howto->name, (bfd_vma) 0, 2670 input_bfd, input_section, rel->r_offset))) 2671 return FALSE; 2672 } 2673 break; 2674 } 2675 } 2676 2677 return TRUE; 2678} 2679 2680/* Finish up dynamic symbol handling. We set the contents of various 2681 dynamic sections here. */ 2682 2683static bfd_boolean 2684sparc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym) 2685 bfd *output_bfd; 2686 struct bfd_link_info *info; 2687 struct elf_link_hash_entry *h; 2688 Elf_Internal_Sym *sym; 2689{ 2690 bfd *dynobj; 2691 2692 dynobj = elf_hash_table (info)->dynobj; 2693 2694 if (h->plt.offset != (bfd_vma) -1) 2695 { 2696 asection *splt; 2697 asection *srela; 2698 Elf_Internal_Rela rela; 2699 bfd_byte *loc; 2700 2701 /* This symbol has an entry in the PLT. Set it up. */ 2702 2703 BFD_ASSERT (h->dynindx != -1); 2704 2705 splt = bfd_get_section_by_name (dynobj, ".plt"); 2706 srela = bfd_get_section_by_name (dynobj, ".rela.plt"); 2707 BFD_ASSERT (splt != NULL && srela != NULL); 2708 2709 /* Fill in the entry in the .rela.plt section. */ 2710 2711 if (h->plt.offset < LARGE_PLT_THRESHOLD) 2712 { 2713 rela.r_offset = sparc64_elf_plt_entry_offset (h->plt.offset); 2714 rela.r_addend = 0; 2715 } 2716 else 2717 { 2718 bfd_vma max = splt->size / PLT_ENTRY_SIZE; 2719 rela.r_offset = sparc64_elf_plt_ptr_offset (h->plt.offset, max); 2720 rela.r_addend = -(sparc64_elf_plt_entry_offset (h->plt.offset) + 4) 2721 -(splt->output_section->vma + splt->output_offset); 2722 } 2723 rela.r_offset += (splt->output_section->vma + splt->output_offset); 2724 rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT); 2725 2726 /* Adjust for the first 4 reserved elements in the .plt section 2727 when setting the offset in the .rela.plt section. 2728 Sun forgot to read their own ABI and copied elf32-sparc behaviour, 2729 thus .plt[4] has corresponding .rela.plt[0] and so on. */ 2730 2731 loc = srela->contents; 2732 loc += (h->plt.offset - 4) * sizeof (Elf64_External_Rela); 2733 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); 2734 2735 if (!h->def_regular) 2736 { 2737 /* Mark the symbol as undefined, rather than as defined in 2738 the .plt section. Leave the value alone. */ 2739 sym->st_shndx = SHN_UNDEF; 2740 /* If the symbol is weak, we do need to clear the value. 2741 Otherwise, the PLT entry would provide a definition for 2742 the symbol even if the symbol wasn't defined anywhere, 2743 and so the symbol would never be NULL. */ 2744 if (!h->ref_regular_nonweak) 2745 sym->st_value = 0; 2746 } 2747 } 2748 2749 if (h->got.offset != (bfd_vma) -1) 2750 { 2751 asection *sgot; 2752 asection *srela; 2753 Elf_Internal_Rela rela; 2754 bfd_byte *loc; 2755 2756 /* This symbol has an entry in the GOT. Set it up. */ 2757 2758 sgot = bfd_get_section_by_name (dynobj, ".got"); 2759 srela = bfd_get_section_by_name (dynobj, ".rela.got"); 2760 BFD_ASSERT (sgot != NULL && srela != NULL); 2761 2762 rela.r_offset = (sgot->output_section->vma 2763 + sgot->output_offset 2764 + (h->got.offset &~ (bfd_vma) 1)); 2765 2766 /* If this is a -Bsymbolic link, and the symbol is defined 2767 locally, we just want to emit a RELATIVE reloc. Likewise if 2768 the symbol was forced to be local because of a version file. 2769 The entry in the global offset table will already have been 2770 initialized in the relocate_section function. */ 2771 if (info->shared 2772 && (info->symbolic || h->dynindx == -1) 2773 && h->def_regular) 2774 { 2775 asection *sec = h->root.u.def.section; 2776 rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE); 2777 rela.r_addend = (h->root.u.def.value 2778 + sec->output_section->vma 2779 + sec->output_offset); 2780 } 2781 else 2782 { 2783 rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT); 2784 rela.r_addend = 0; 2785 } 2786 2787 bfd_put_64 (output_bfd, (bfd_vma) 0, 2788 sgot->contents + (h->got.offset &~ (bfd_vma) 1)); 2789 loc = srela->contents; 2790 loc += srela->reloc_count++ * sizeof (Elf64_External_Rela); 2791 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); 2792 } 2793 2794 if (h->needs_copy) 2795 { 2796 asection *s; 2797 Elf_Internal_Rela rela; 2798 bfd_byte *loc; 2799 2800 /* This symbols needs a copy reloc. Set it up. */ 2801 BFD_ASSERT (h->dynindx != -1); 2802 2803 s = bfd_get_section_by_name (h->root.u.def.section->owner, 2804 ".rela.bss"); 2805 BFD_ASSERT (s != NULL); 2806 2807 rela.r_offset = (h->root.u.def.value 2808 + h->root.u.def.section->output_section->vma 2809 + h->root.u.def.section->output_offset); 2810 rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY); 2811 rela.r_addend = 0; 2812 loc = s->contents + s->reloc_count++ * sizeof (Elf64_External_Rela); 2813 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); 2814 } 2815 2816 /* Mark some specially defined symbols as absolute. */ 2817 if (strcmp (h->root.root.string, "_DYNAMIC") == 0 2818 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 2819 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) 2820 sym->st_shndx = SHN_ABS; 2821 2822 return TRUE; 2823} 2824 2825/* Finish up the dynamic sections. */ 2826 2827static bfd_boolean 2828sparc64_elf_finish_dynamic_sections (output_bfd, info) 2829 bfd *output_bfd; 2830 struct bfd_link_info *info; 2831{ 2832 bfd *dynobj; 2833 int stt_regidx = -1; 2834 asection *sdyn; 2835 asection *sgot; 2836 2837 dynobj = elf_hash_table (info)->dynobj; 2838 2839 sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); 2840 2841 if (elf_hash_table (info)->dynamic_sections_created) 2842 { 2843 asection *splt; 2844 Elf64_External_Dyn *dyncon, *dynconend; 2845 2846 splt = bfd_get_section_by_name (dynobj, ".plt"); 2847 BFD_ASSERT (splt != NULL && sdyn != NULL); 2848 2849 dyncon = (Elf64_External_Dyn *) sdyn->contents; 2850 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); 2851 for (; dyncon < dynconend; dyncon++) 2852 { 2853 Elf_Internal_Dyn dyn; 2854 const char *name; 2855 bfd_boolean size; 2856 2857 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); 2858 2859 switch (dyn.d_tag) 2860 { 2861 case DT_PLTGOT: name = ".plt"; size = FALSE; break; 2862 case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; 2863 case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; 2864 case DT_SPARC_REGISTER: 2865 if (stt_regidx == -1) 2866 { 2867 stt_regidx = 2868 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1); 2869 if (stt_regidx == -1) 2870 return FALSE; 2871 } 2872 dyn.d_un.d_val = stt_regidx++; 2873 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); 2874 /* fallthrough */ 2875 default: name = NULL; size = FALSE; break; 2876 } 2877 2878 if (name != NULL) 2879 { 2880 asection *s; 2881 2882 s = bfd_get_section_by_name (output_bfd, name); 2883 if (s == NULL) 2884 dyn.d_un.d_val = 0; 2885 else 2886 { 2887 if (! size) 2888 dyn.d_un.d_ptr = s->vma; 2889 else 2890 dyn.d_un.d_val = s->size; 2891 } 2892 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); 2893 } 2894 } 2895 2896 /* Initialize the contents of the .plt section. */ 2897 if (splt->size > 0) 2898 sparc64_elf_build_plt (output_bfd, splt->contents, 2899 (int) (splt->size / PLT_ENTRY_SIZE)); 2900 2901 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 2902 PLT_ENTRY_SIZE; 2903 } 2904 2905 /* Set the first entry in the global offset table to the address of 2906 the dynamic section. */ 2907 sgot = bfd_get_section_by_name (dynobj, ".got"); 2908 BFD_ASSERT (sgot != NULL); 2909 if (sgot->size > 0) 2910 { 2911 if (sdyn == NULL) 2912 bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); 2913 else 2914 bfd_put_64 (output_bfd, 2915 sdyn->output_section->vma + sdyn->output_offset, 2916 sgot->contents); 2917 } 2918 2919 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; 2920 2921 return TRUE; 2922} 2923 2924static enum elf_reloc_type_class 2925sparc64_elf_reloc_type_class (rela) 2926 const Elf_Internal_Rela *rela; 2927{ 2928 switch ((int) ELF64_R_TYPE (rela->r_info)) 2929 { 2930 case R_SPARC_RELATIVE: 2931 return reloc_class_relative; 2932 case R_SPARC_JMP_SLOT: 2933 return reloc_class_plt; 2934 case R_SPARC_COPY: 2935 return reloc_class_copy; 2936 default: 2937 return reloc_class_normal; 2938 } 2939} 2940 2941/* Functions for dealing with the e_flags field. */ 2942 2943/* Merge backend specific data from an object file to the output 2944 object file when linking. */ 2945 2946static bfd_boolean 2947sparc64_elf_merge_private_bfd_data (ibfd, obfd) 2948 bfd *ibfd; 2949 bfd *obfd; 2950{ 2951 bfd_boolean error; 2952 flagword new_flags, old_flags; 2953 int new_mm, old_mm; 2954 2955 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour 2956 || bfd_get_flavour (obfd) != bfd_target_elf_flavour) 2957 return TRUE; 2958 2959 new_flags = elf_elfheader (ibfd)->e_flags; 2960 old_flags = elf_elfheader (obfd)->e_flags; 2961 2962 if (!elf_flags_init (obfd)) /* First call, no flags set */ 2963 { 2964 elf_flags_init (obfd) = TRUE; 2965 elf_elfheader (obfd)->e_flags = new_flags; 2966 } 2967 2968 else if (new_flags == old_flags) /* Compatible flags are ok */ 2969 ; 2970 2971 else /* Incompatible flags */ 2972 { 2973 error = FALSE; 2974 2975#define EF_SPARC_ISA_EXTENSIONS \ 2976 (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1) 2977 2978 if ((ibfd->flags & DYNAMIC) != 0) 2979 { 2980 /* We don't want dynamic objects memory ordering and 2981 architecture to have any role. That's what dynamic linker 2982 should do. */ 2983 new_flags &= ~(EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS); 2984 new_flags |= (old_flags 2985 & (EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS)); 2986 } 2987 else 2988 { 2989 /* Choose the highest architecture requirements. */ 2990 old_flags |= (new_flags & EF_SPARC_ISA_EXTENSIONS); 2991 new_flags |= (old_flags & EF_SPARC_ISA_EXTENSIONS); 2992 if ((old_flags & (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3)) 2993 && (old_flags & EF_SPARC_HAL_R1)) 2994 { 2995 error = TRUE; 2996 (*_bfd_error_handler) 2997 (_("%B: linking UltraSPARC specific with HAL specific code"), 2998 ibfd); 2999 } 3000 /* Choose the most restrictive memory ordering. */ 3001 old_mm = (old_flags & EF_SPARCV9_MM); 3002 new_mm = (new_flags & EF_SPARCV9_MM); 3003 old_flags &= ~EF_SPARCV9_MM; 3004 new_flags &= ~EF_SPARCV9_MM; 3005 if (new_mm < old_mm) 3006 old_mm = new_mm; 3007 old_flags |= old_mm; 3008 new_flags |= old_mm; 3009 } 3010 3011 /* Warn about any other mismatches */ 3012 if (new_flags != old_flags) 3013 { 3014 error = TRUE; 3015 (*_bfd_error_handler) 3016 (_("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), 3017 ibfd, (long) new_flags, (long) old_flags); 3018 } 3019 3020 elf_elfheader (obfd)->e_flags = old_flags; 3021 3022 if (error) 3023 { 3024 bfd_set_error (bfd_error_bad_value); 3025 return FALSE; 3026 } 3027 } 3028 return TRUE; 3029} 3030 3031/* MARCO: Set the correct entry size for the .stab section. */ 3032 3033static bfd_boolean 3034sparc64_elf_fake_sections (abfd, hdr, sec) 3035 bfd *abfd ATTRIBUTE_UNUSED; 3036 Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED; 3037 asection *sec; 3038{ 3039 const char *name; 3040 3041 name = bfd_get_section_name (abfd, sec); 3042 3043 if (strcmp (name, ".stab") == 0) 3044 { 3045 /* Even in the 64bit case the stab entries are only 12 bytes long. */ 3046 elf_section_data (sec)->this_hdr.sh_entsize = 12; 3047 } 3048 3049 return TRUE; 3050} 3051 3052/* Print a STT_REGISTER symbol to file FILE. */ 3053 3054static const char * 3055sparc64_elf_print_symbol_all (abfd, filep, symbol) 3056 bfd *abfd ATTRIBUTE_UNUSED; 3057 PTR filep; 3058 asymbol *symbol; 3059{ 3060 FILE *file = (FILE *) filep; 3061 int reg, type; 3062 3063 if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info) 3064 != STT_REGISTER) 3065 return NULL; 3066 3067 reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value; 3068 type = symbol->flags; 3069 fprintf (file, "REG_%c%c%11s%c%c R", "GOLI" [reg / 8], '0' + (reg & 7), "", 3070 ((type & BSF_LOCAL) 3071 ? (type & BSF_GLOBAL) ? '!' : 'l' 3072 : (type & BSF_GLOBAL) ? 'g' : ' '), 3073 (type & BSF_WEAK) ? 'w' : ' '); 3074 if (symbol->name == NULL || symbol->name [0] == '\0') 3075 return "#scratch"; 3076 else 3077 return symbol->name; 3078} 3079 3080/* Set the right machine number for a SPARC64 ELF file. */ 3081 3082static bfd_boolean 3083sparc64_elf_object_p (abfd) 3084 bfd *abfd; 3085{ 3086 unsigned long mach = bfd_mach_sparc_v9; 3087 3088 if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3) 3089 mach = bfd_mach_sparc_v9b; 3090 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1) 3091 mach = bfd_mach_sparc_v9a; 3092 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach); 3093} 3094 3095/* Return address for Ith PLT stub in section PLT, for relocation REL 3096 or (bfd_vma) -1 if it should not be included. */ 3097 3098static bfd_vma 3099sparc64_elf_plt_sym_val (bfd_vma i, const asection *plt, 3100 const arelent *rel ATTRIBUTE_UNUSED) 3101{ 3102 bfd_vma j; 3103 3104 i += PLT_HEADER_SIZE / PLT_ENTRY_SIZE; 3105 if (i < LARGE_PLT_THRESHOLD) 3106 return plt->vma + i * PLT_ENTRY_SIZE; 3107 3108 j = (i - LARGE_PLT_THRESHOLD) % 160; 3109 i -= j; 3110 return plt->vma + i * PLT_ENTRY_SIZE + j * 4 * 6; 3111} 3112 3113/* Relocations in the 64 bit SPARC ELF ABI are more complex than in 3114 standard ELF, because R_SPARC_OLO10 has secondary addend in 3115 ELF64_R_TYPE_DATA field. This structure is used to redirect the 3116 relocation handling routines. */ 3117 3118const struct elf_size_info sparc64_elf_size_info = 3119{ 3120 sizeof (Elf64_External_Ehdr), 3121 sizeof (Elf64_External_Phdr), 3122 sizeof (Elf64_External_Shdr), 3123 sizeof (Elf64_External_Rel), 3124 sizeof (Elf64_External_Rela), 3125 sizeof (Elf64_External_Sym), 3126 sizeof (Elf64_External_Dyn), 3127 sizeof (Elf_External_Note), 3128 4, /* hash-table entry size. */ 3129 /* Internal relocations per external relocations. 3130 For link purposes we use just 1 internal per 3131 1 external, for assembly and slurp symbol table 3132 we use 2. */ 3133 1, 3134 64, /* arch_size. */ 3135 3, /* log_file_align. */ 3136 ELFCLASS64, 3137 EV_CURRENT, 3138 bfd_elf64_write_out_phdrs, 3139 bfd_elf64_write_shdrs_and_ehdr, 3140 sparc64_elf_write_relocs, 3141 bfd_elf64_swap_symbol_in, 3142 bfd_elf64_swap_symbol_out, 3143 sparc64_elf_slurp_reloc_table, 3144 bfd_elf64_slurp_symbol_table, 3145 bfd_elf64_swap_dyn_in, 3146 bfd_elf64_swap_dyn_out, 3147 bfd_elf64_swap_reloc_in, 3148 bfd_elf64_swap_reloc_out, 3149 bfd_elf64_swap_reloca_in, 3150 bfd_elf64_swap_reloca_out 3151}; 3152 3153#define TARGET_BIG_SYM bfd_elf64_sparc_vec 3154#define TARGET_BIG_NAME "elf64-sparc" 3155#define ELF_ARCH bfd_arch_sparc 3156#define ELF_MAXPAGESIZE 0x100000 3157 3158/* This is the official ABI value. */ 3159#define ELF_MACHINE_CODE EM_SPARCV9 3160 3161/* This is the value that we used before the ABI was released. */ 3162#define ELF_MACHINE_ALT1 EM_OLD_SPARCV9 3163 3164#define bfd_elf64_bfd_link_hash_table_create \ 3165 sparc64_elf_bfd_link_hash_table_create 3166 3167#define elf_info_to_howto \ 3168 sparc64_elf_info_to_howto 3169#define bfd_elf64_get_reloc_upper_bound \ 3170 sparc64_elf_get_reloc_upper_bound 3171#define bfd_elf64_get_dynamic_reloc_upper_bound \ 3172 sparc64_elf_get_dynamic_reloc_upper_bound 3173#define bfd_elf64_canonicalize_reloc \ 3174 sparc64_elf_canonicalize_reloc 3175#define bfd_elf64_canonicalize_dynamic_reloc \ 3176 sparc64_elf_canonicalize_dynamic_reloc 3177#define bfd_elf64_bfd_reloc_type_lookup \ 3178 sparc64_elf_reloc_type_lookup 3179#define bfd_elf64_bfd_relax_section \ 3180 sparc64_elf_relax_section 3181#define bfd_elf64_new_section_hook \ 3182 sparc64_elf_new_section_hook 3183 3184#define elf_backend_create_dynamic_sections \ 3185 _bfd_elf_create_dynamic_sections 3186#define elf_backend_add_symbol_hook \ 3187 sparc64_elf_add_symbol_hook 3188#define elf_backend_get_symbol_type \ 3189 sparc64_elf_get_symbol_type 3190#define elf_backend_symbol_processing \ 3191 sparc64_elf_symbol_processing 3192#define elf_backend_check_relocs \ 3193 sparc64_elf_check_relocs 3194#define elf_backend_adjust_dynamic_symbol \ 3195 sparc64_elf_adjust_dynamic_symbol 3196#define elf_backend_size_dynamic_sections \ 3197 sparc64_elf_size_dynamic_sections 3198#define elf_backend_relocate_section \ 3199 sparc64_elf_relocate_section 3200#define elf_backend_finish_dynamic_symbol \ 3201 sparc64_elf_finish_dynamic_symbol 3202#define elf_backend_finish_dynamic_sections \ 3203 sparc64_elf_finish_dynamic_sections 3204#define elf_backend_print_symbol_all \ 3205 sparc64_elf_print_symbol_all 3206#define elf_backend_output_arch_syms \ 3207 sparc64_elf_output_arch_syms 3208#define bfd_elf64_bfd_merge_private_bfd_data \ 3209 sparc64_elf_merge_private_bfd_data 3210#define elf_backend_fake_sections \ 3211 sparc64_elf_fake_sections 3212#define elf_backend_plt_sym_val \ 3213 sparc64_elf_plt_sym_val 3214 3215#define elf_backend_size_info \ 3216 sparc64_elf_size_info 3217#define elf_backend_object_p \ 3218 sparc64_elf_object_p 3219#define elf_backend_reloc_type_class \ 3220 sparc64_elf_reloc_type_class 3221 3222#define elf_backend_want_got_plt 0 3223#define elf_backend_plt_readonly 0 3224#define elf_backend_want_plt_sym 1 3225#define elf_backend_rela_normal 1 3226 3227/* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table. */ 3228#define elf_backend_plt_alignment 8 3229 3230#define elf_backend_got_header_size 8 3231 3232#include "elf64-target.h" 3233